Initial release of Firebase performance monitoring (#508)

* Initial 'flutter create' commit

* Added Firebase and updated channel name

* Added basic functions for performance monitoring

* Added license and app information

* Fixed iOS updating collection status

* Added testing for peformance collection

* Implemented Trace and added testing

* Implemented start and stop methods for trace

* Implemented Android trace methods

* Implemented performance traces on iOS

* Implemented more trace testing

* Added iOS attributes for traces

* Added comments and Licenses

* Updated comments and added debug prints

* Added README info

* Added more debugging prints

* Fix formatting issues

* Fixed unused variable

* More format changes

* Formatting

* Removed widget test

* Added dev dependencies

* Added documentation and constants

* Removed a space

* Added performance to flutterfire and readme

* New trace created only on dart side

* Updated test to use setMockMethodChannel

* Method renames

* Fixed a bunch of pull request comments

* Added trace asserts

* Dart reformat

* Fix tests

* Cleaned up UI code

* Comments and variable names

* Formatting

* Reverted analytics file back to upstream/master

* Formatting

* Removed gradle files

* PR comment changes

* Updated tests to use 'handle' as id key

* Removed assert descriptions
diff --git a/FlutterFire.md b/FlutterFire.md
index cf6b375..6a78cc9 100644
--- a/FlutterFire.md
+++ b/FlutterFire.md
@@ -22,6 +22,7 @@
 | [cloud_firestore][firestore_pub] | [Cloud Firestore][firestore_product] | [`packages/cloud_firestore`][firestore_code] |
 | [firebase_messaging][messaging_pub] | [Firebase Cloud Messaging][messaging_product] | [`packages/firebase_messaging`][messaging_code] |
 | [firebase_storage][storage_pub] | [Firebase Cloud Storage][storage_product] | [`packages/firebase_storage`][storage_code] |
+| [firebase_performance][storage_pub] | [Firebase Performance Monitoring][performance_product] | [`packages/firebase_performance`][performance_code] |
 
 [admob_pub]: https://pub.dartlang.org/packages/firebase_admob
 [admob_product]: https://firebase.google.com/docs/admob/
@@ -54,3 +55,7 @@
 [storage_pub]: https://pub.dartlang.org/packages/firebase_storage
 [storage_product]: https://firebase.google.com/products/storage/
 [storage_code]: https://github.com/flutter/plugins/tree/master/packages/firebase_storage
+
+[performance_pub]: https://pub.dartlang.org/packages/firebase_performance
+[performance_product]: https://firebase.google.com/products/performance/
+[performance_code]: https://github.com/flutter/plugins/tree/master/packages/firebase_performance
diff --git a/README.md b/README.md
index 33c1ddb..84354f6 100644
--- a/README.md
+++ b/README.md
@@ -65,5 +65,6 @@
 | [firebase_database](./packages/firebase_database/) | [![pub package](https://img.shields.io/pub/v/firebase_database.svg)](https://pub.dartlang.org/packages/firebase_database) |
 | [firebase_messaging](./packages/firebase_messaging/) | [![pub package](https://img.shields.io/pub/v/firebase_messaging.svg)](https://pub.dartlang.org/packages/firebase_messaging) |
 | [firebase_storage](./packages/firebase_storage/) | [![pub package](https://img.shields.io/pub/v/firebase_storage.svg)](https://pub.dartlang.org/packages/firebase_storage) |
+| [firebase_performance](./packages/firebase_performance/) | [![pub package](https://img.shields.io/pub/v/firebase_performance.svg)](https://pub.dartlang.org/packages/firebase_performance) |
 
 Learn more about [FlutterFire](https://github.com/flutter/plugins/blob/master/FlutterFire.md).
diff --git a/packages/firebase_performance/.gitignore b/packages/firebase_performance/.gitignore
new file mode 100644
index 0000000..7ecebb4
--- /dev/null
+++ b/packages/firebase_performance/.gitignore
@@ -0,0 +1,8 @@
+.DS_Store
+.dart_tool/
+
+.packages
+.pub/
+pubspec.lock
+
+build/
diff --git a/packages/firebase_performance/CHANGELOG.md b/packages/firebase_performance/CHANGELOG.md
new file mode 100644
index 0000000..95948be
--- /dev/null
+++ b/packages/firebase_performance/CHANGELOG.md
@@ -0,0 +1,3 @@
+## 0.0.1
+
+* Initial Release
diff --git a/packages/firebase_performance/LICENSE b/packages/firebase_performance/LICENSE
new file mode 100644
index 0000000..c892933
--- /dev/null
+++ b/packages/firebase_performance/LICENSE
@@ -0,0 +1,27 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/packages/firebase_performance/README.md b/packages/firebase_performance/README.md
new file mode 100644
index 0000000..d78bebd
--- /dev/null
+++ b/packages/firebase_performance/README.md
@@ -0,0 +1,36 @@
+# Google Performance Monitoring for Firebase
+
+[![pub package](https://img.shields.io/pub/v/firebase_performance.svg)](https://pub.dartlang.org/packages/firebase_performance)
+
+A Flutter plugin to use the [Google Performance Monitoring for Firebase API](https://firebase.google.com/docs/perf-mon/).
+
+For Flutter plugins for other Firebase products, see [FlutterFire.md](https://github.com/flutter/plugins/blob/master/FlutterFire.md).
+
+*Note*: This plugin is still under development, and some APIs might not be available yet. [Feedback](https://github.com/flutter/flutter/issues) and [Pull Requests](https://github.com/flutter/plugins/pulls) are most welcome!
+
+## Usage
+To use this plugin, add `firebase_performance` as a [dependency in your pubspec.yaml file](https://flutter.io/platform-plugins/). You must also configure firebase performance monitoring for each platform project: Android and iOS (see the example folder or https://codelabs.developers.google.com/codelabs/flutter-firebase/#4 for step by step details).
+
+## Define a Custom Trace
+
+A custom trace is a report of performance data associated with some of the code in your app. To learn more about custom traces, see the [Performance Monitoring overview](https://firebase.google.com/docs/perf-mon/#how_does_it_work).
+
+```dart
+
+Trace myTrace = FirebasePerformance.instance.newTrace("test_trace");
+myTrace.start();
+
+Item item = cache.fetch("item");
+if (item != null) {
+  myTrace.incrementCounter("item_cache_hit");
+} else {
+  myTrace.incrementCounter("item_cache_miss");
+}
+
+myTrace.stop();
+
+```
+
+## Getting Started
+
+See the `example` directory for a complete sample app using Google Performance Monitoring for Firebase.
\ No newline at end of file
diff --git a/packages/firebase_performance/android/.gitignore b/packages/firebase_performance/android/.gitignore
new file mode 100644
index 0000000..c6cbe56
--- /dev/null
+++ b/packages/firebase_performance/android/.gitignore
@@ -0,0 +1,8 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
diff --git a/packages/firebase_performance/android/build.gradle b/packages/firebase_performance/android/build.gradle
new file mode 100644
index 0000000..f5f426a
--- /dev/null
+++ b/packages/firebase_performance/android/build.gradle
@@ -0,0 +1,37 @@
+group 'io.flutter.plugins.firebaseperformance'
+version '1.0-SNAPSHOT'
+
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.0.1'
+    }
+}
+
+rootProject.allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 27
+
+    defaultConfig {
+        minSdkVersion 16
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+    dependencies {
+        api 'com.google.firebase:firebase-perf:15.0.0'
+    }
+}
diff --git a/packages/firebase_performance/android/gradle.properties b/packages/firebase_performance/android/gradle.properties
new file mode 100644
index 0000000..8bd86f6
--- /dev/null
+++ b/packages/firebase_performance/android/gradle.properties
@@ -0,0 +1 @@
+org.gradle.jvmargs=-Xmx1536M
diff --git a/packages/firebase_performance/android/settings.gradle b/packages/firebase_performance/android/settings.gradle
new file mode 100644
index 0000000..50c3a2d
--- /dev/null
+++ b/packages/firebase_performance/android/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'firebase_performance'
diff --git a/packages/firebase_performance/android/src/main/AndroidManifest.xml b/packages/firebase_performance/android/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..4708a5e
--- /dev/null
+++ b/packages/firebase_performance/android/src/main/AndroidManifest.xml
@@ -0,0 +1,5 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="io.flutter.plugins.firebaseperformance">
+
+  <uses-permission android:name="android.permission.INTERNET" />
+</manifest>
diff --git a/packages/firebase_performance/android/src/main/java/io/flutter/plugins/firebaseperformance/FirebasePerformancePlugin.java b/packages/firebase_performance/android/src/main/java/io/flutter/plugins/firebaseperformance/FirebasePerformancePlugin.java
new file mode 100644
index 0000000..a688085
--- /dev/null
+++ b/packages/firebase_performance/android/src/main/java/io/flutter/plugins/firebaseperformance/FirebasePerformancePlugin.java
@@ -0,0 +1,91 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package io.flutter.plugins.firebaseperformance;
+
+import android.util.SparseArray;
+import com.google.firebase.perf.FirebasePerformance;
+import com.google.firebase.perf.metrics.Trace;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.MethodChannel;
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
+import io.flutter.plugin.common.MethodChannel.Result;
+import io.flutter.plugin.common.PluginRegistry.Registrar;
+import java.util.Map;
+
+/** FirebasePerformancePlugin */
+public class FirebasePerformancePlugin implements MethodCallHandler {
+  private FirebasePerformance firebasePerformance;
+
+  private final SparseArray<Trace> traces = new SparseArray<>();
+
+  public static void registerWith(Registrar registrar) {
+    final MethodChannel channel =
+        new MethodChannel(registrar.messenger(), "plugins.flutter.io/firebase_performance");
+    channel.setMethodCallHandler(new FirebasePerformancePlugin());
+  }
+
+  private FirebasePerformancePlugin() {
+    firebasePerformance = FirebasePerformance.getInstance();
+  }
+
+  @Override
+  public void onMethodCall(MethodCall call, Result result) {
+    switch (call.method) {
+      case "FirebasePerformance#isPerformanceCollectionEnabled":
+        result.success(firebasePerformance.isPerformanceCollectionEnabled());
+        break;
+      case "FirebasePerformance#setPerformanceCollectionEnabled":
+        final boolean enabled = (boolean) call.arguments;
+        firebasePerformance.setPerformanceCollectionEnabled(enabled);
+        result.success(null);
+        break;
+      case "Trace#start":
+        handleTraceStart(call, result);
+        break;
+      case "Trace#stop":
+        handleTraceStop(call, result);
+        break;
+      default:
+        result.notImplemented();
+    }
+  }
+
+  private void handleTraceStart(MethodCall call, Result result) {
+    Map<String, Object> arguments = call.arguments();
+
+    int handle = (int) arguments.get("handle");
+    String name = (String) arguments.get("name");
+
+    Trace trace = firebasePerformance.newTrace(name);
+
+    traces.put(handle, trace);
+
+    trace.start();
+    result.success(null);
+  }
+
+  private void handleTraceStop(MethodCall call, Result result) {
+    Map<String, Object> arguments = call.arguments();
+
+    int handle = (int) arguments.get("handle");
+    Trace trace = traces.get(handle);
+
+    @SuppressWarnings("unchecked")
+    Map<String, Integer> counters = (Map<String, Integer>) arguments.get("counters");
+    for (Map.Entry<String, Integer> entry : counters.entrySet()) {
+      trace.incrementCounter(entry.getKey(), entry.getValue());
+    }
+
+    @SuppressWarnings("unchecked")
+    Map<String, String> attributes = (Map<String, String>) arguments.get("attributes");
+    for (Map.Entry<String, String> entry : attributes.entrySet()) {
+      trace.putAttribute(entry.getKey(), entry.getValue());
+    }
+
+    trace.stop();
+    traces.remove(handle);
+    result.success(null);
+  }
+}
diff --git a/packages/firebase_performance/example/.gitignore b/packages/firebase_performance/example/.gitignore
new file mode 100644
index 0000000..dee655c
--- /dev/null
+++ b/packages/firebase_performance/example/.gitignore
@@ -0,0 +1,9 @@
+.DS_Store
+.dart_tool/
+
+.packages
+.pub/
+
+build/
+
+.flutter-plugins
diff --git a/packages/firebase_performance/example/.metadata b/packages/firebase_performance/example/.metadata
new file mode 100644
index 0000000..866a061
--- /dev/null
+++ b/packages/firebase_performance/example/.metadata
@@ -0,0 +1,8 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: f408bb06f9361793ca85493c38d809ee1e2f7e30
+  channel: master
diff --git a/packages/firebase_performance/example/README.md b/packages/firebase_performance/example/README.md
new file mode 100644
index 0000000..cb4342d
--- /dev/null
+++ b/packages/firebase_performance/example/README.md
@@ -0,0 +1,8 @@
+# firebase_performance_example
+
+Demonstrates how to use the firebase_performance plugin.
+
+## Getting Started
+
+For help getting started with Flutter, view our online
+[documentation](https://flutter.io/).
diff --git a/packages/firebase_performance/example/android/.gitignore b/packages/firebase_performance/example/android/.gitignore
new file mode 100644
index 0000000..e335c6e
--- /dev/null
+++ b/packages/firebase_performance/example/android/.gitignore
@@ -0,0 +1,14 @@
+*.iml
+*.class
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+GeneratedPluginRegistrant.java
+
+/gradle/wrapper/gradle-wrapper.jar
+/gradlew
+/gradlew.bat
\ No newline at end of file
diff --git a/packages/firebase_performance/example/android/app/build.gradle b/packages/firebase_performance/example/android/app/build.gradle
new file mode 100644
index 0000000..d2db55d
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/build.gradle
@@ -0,0 +1,49 @@
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+apply plugin: 'com.android.application'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 27
+
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+
+    defaultConfig {
+        applicationId "io.flutter.plugins.firebaseperformanceexample"
+        minSdkVersion 16
+        targetSdkVersion 27
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+}
+
+apply plugin: 'com.google.gms.google-services'
\ No newline at end of file
diff --git a/packages/firebase_performance/example/android/app/google-services.json b/packages/firebase_performance/example/android/app/google-services.json
new file mode 100644
index 0000000..007c845
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/google-services.json
@@ -0,0 +1,62 @@
+{
+  "project_info": {
+    "project_number": "479882132969",
+    "firebase_url": "https://my-flutter-proj.firebaseio.com",
+    "project_id": "my-flutter-proj",
+    "storage_bucket": "my-flutter-proj.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:479882132969:android:215a22700e1b466b",
+        "android_client_info": {
+          "package_name": "io.flutter.plugins.firebaseperformanceexample"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "479882132969-8h4kiv8m7ho4tvn6uuujsfcrf69unuf7.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "io.flutter.plugins.firebaseperformanceexample",
+            "certificate_hash": "e733b7a303250b63e06de6f7c9767c517d69cfa0"
+          }
+        },
+        {
+          "client_id": "479882132969-0d20fkjtr1p8evfomfkf3vmi50uajml2.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCrZz9T0Pg0rDnpxfNuPBrOxGhXskfebXs"
+        }
+      ],
+      "services": {
+        "analytics_service": {
+          "status": 1
+        },
+        "appinvite_service": {
+          "status": 2,
+          "other_platform_oauth_client": [
+            {
+              "client_id": "479882132969-3nf0of470m8do5qa83e8tiivv7e1thq1.apps.googleusercontent.com",
+              "client_type": 2,
+              "ios_info": {
+                "bundle_id": "io.flutter.plugins.firebasePerfExample"
+              }
+            },
+            {
+              "client_id": "479882132969-0d20fkjtr1p8evfomfkf3vmi50uajml2.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        },
+        "ads_service": {
+          "status": 2
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}
\ No newline at end of file
diff --git a/packages/firebase_performance/example/android/app/local.properties b/packages/firebase_performance/example/android/app/local.properties
new file mode 100644
index 0000000..534a6f7
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/local.properties
@@ -0,0 +1,8 @@
+## This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+#Wed Apr 18 10:11:17 PDT 2018
+sdk.dir=/Users/bmparr/Library/Android/sdk
diff --git a/packages/firebase_performance/example/android/app/src/main/AndroidManifest.xml b/packages/firebase_performance/example/android/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..1e529d8
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/AndroidManifest.xml
@@ -0,0 +1,26 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="io.flutter.plugins.firebaseperformanceexample">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+
+    <application
+        android:name="io.flutter.app.FlutterApplication"
+        android:label="firebase_performance_example"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <meta-data
+                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
+                android:value="true" />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
diff --git a/packages/firebase_performance/example/android/app/src/main/java/io/flutter/plugins/firebaseperformanceexample/MainActivity.java b/packages/firebase_performance/example/android/app/src/main/java/io/flutter/plugins/firebaseperformanceexample/MainActivity.java
new file mode 100644
index 0000000..945f065
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/java/io/flutter/plugins/firebaseperformanceexample/MainActivity.java
@@ -0,0 +1,13 @@
+package io.flutter.plugins.firebaseperformanceexample;
+
+import android.os.Bundle;
+import io.flutter.app.FlutterActivity;
+import io.flutter.plugins.GeneratedPluginRegistrant;
+
+public class MainActivity extends FlutterActivity {
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    GeneratedPluginRegistrant.registerWith(this);
+  }
+}
diff --git a/packages/firebase_performance/example/android/app/src/main/res/drawable/launch_background.xml b/packages/firebase_performance/example/android/app/src/main/res/drawable/launch_background.xml
new file mode 100644
index 0000000..304732f
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/res/drawable/launch_background.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>
diff --git a/packages/firebase_performance/example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png b/packages/firebase_performance/example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..db77bb4
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
Binary files differ
diff --git a/packages/firebase_performance/example/android/app/src/main/res/mipmap-mdpi/ic_launcher.png b/packages/firebase_performance/example/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..17987b7
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
Binary files differ
diff --git a/packages/firebase_performance/example/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/packages/firebase_performance/example/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..09d4391
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
Binary files differ
diff --git a/packages/firebase_performance/example/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/packages/firebase_performance/example/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..d5f1c8d
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/packages/firebase_performance/example/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/packages/firebase_performance/example/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..4d6372e
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
Binary files differ
diff --git a/packages/firebase_performance/example/android/app/src/main/res/values/styles.xml b/packages/firebase_performance/example/android/app/src/main/res/values/styles.xml
new file mode 100644
index 0000000..00fa441
--- /dev/null
+++ b/packages/firebase_performance/example/android/app/src/main/res/values/styles.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+</resources>
diff --git a/packages/firebase_performance/example/android/build.gradle b/packages/firebase_performance/example/android/build.gradle
new file mode 100644
index 0000000..6d31bc0
--- /dev/null
+++ b/packages/firebase_performance/example/android/build.gradle
@@ -0,0 +1,32 @@
+buildscript {
+    repositories {
+        google()
+        jcenter()
+        mavenLocal()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.google.gms:google-services:3.1.2'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+        mavenLocal()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
diff --git a/packages/firebase_performance/example/android/gradle.properties b/packages/firebase_performance/example/android/gradle.properties
new file mode 100644
index 0000000..8bd86f6
--- /dev/null
+++ b/packages/firebase_performance/example/android/gradle.properties
@@ -0,0 +1 @@
+org.gradle.jvmargs=-Xmx1536M
diff --git a/packages/firebase_performance/example/android/gradle/wrapper/gradle-wrapper.properties b/packages/firebase_performance/example/android/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..aa901e1
--- /dev/null
+++ b/packages/firebase_performance/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Fri Jun 23 08:50:38 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
diff --git a/packages/firebase_performance/example/android/settings.gradle b/packages/firebase_performance/example/android/settings.gradle
new file mode 100644
index 0000000..5a2f14f
--- /dev/null
+++ b/packages/firebase_performance/example/android/settings.gradle
@@ -0,0 +1,15 @@
+include ':app'
+
+def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
+
+def plugins = new Properties()
+def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
+if (pluginsFile.exists()) {
+    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
+}
+
+plugins.each { name, path ->
+    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
+    include ":$name"
+    project(":$name").projectDir = pluginDirectory
+}
diff --git a/packages/firebase_performance/example/firebase_performance_example.iml b/packages/firebase_performance/example/firebase_performance_example.iml
new file mode 100644
index 0000000..e5c8371
--- /dev/null
+++ b/packages/firebase_performance/example/firebase_performance_example.iml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/lib" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/.dart_tool" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea" />
+      <excludeFolder url="file://$MODULE_DIR$/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/build" />
+    </content>
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Dart SDK" level="project" />
+    <orderEntry type="library" name="Flutter Plugins" level="project" />
+    <orderEntry type="library" name="Dart Packages" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/packages/firebase_performance/example/firebase_performance_example_android.iml b/packages/firebase_performance/example/firebase_performance_example_android.iml
new file mode 100644
index 0000000..b050030
--- /dev/null
+++ b/packages/firebase_performance/example/firebase_performance_example_android.iml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="android" name="Android">
+      <configuration>
+        <option name="ALLOW_USER_CONFIGURATION" value="false" />
+        <option name="GEN_FOLDER_RELATIVE_PATH_APT" value="/android/gen" />
+        <option name="GEN_FOLDER_RELATIVE_PATH_AIDL" value="/android/gen" />
+        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/android/AndroidManifest.xml" />
+        <option name="RES_FOLDER_RELATIVE_PATH" value="/android/res" />
+        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/android/assets" />
+        <option name="LIBS_FOLDER_RELATIVE_PATH" value="/android/libs" />
+        <option name="PROGUARD_LOGS_FOLDER_RELATIVE_PATH" value="/android/proguard_logs" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/android">
+      <sourceFolder url="file://$MODULE_DIR$/android/app/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/android/gen" isTestSource="false" generated="true" />
+    </content>
+    <orderEntry type="jdk" jdkName="Android API 25 Platform" jdkType="Android SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Flutter for Android" level="project" />
+  </component>
+</module>
diff --git a/packages/firebase_performance/example/ios/.gitignore b/packages/firebase_performance/example/ios/.gitignore
new file mode 100644
index 0000000..2a8c8b6
--- /dev/null
+++ b/packages/firebase_performance/example/ios/.gitignore
@@ -0,0 +1,44 @@
+.idea/
+.vagrant/
+.sconsign.dblite
+.svn/
+
+.DS_Store
+*.swp
+profile
+
+DerivedData/
+build/
+GeneratedPluginRegistrant.h
+GeneratedPluginRegistrant.m
+
+.generated/
+
+*.pbxuser
+*.mode1v3
+*.mode2v3
+*.perspectivev3
+
+!default.pbxuser
+!default.mode1v3
+!default.mode2v3
+!default.perspectivev3
+
+xcuserdata
+
+*.moved-aside
+
+*.pyc
+*sync/
+Icon?
+.tags*
+
+/Flutter/app.flx
+/Flutter/app.zip
+/Flutter/flutter_assets/
+/Flutter/App.framework
+/Flutter/Flutter.framework
+/Flutter/Generated.xcconfig
+/ServiceDefinitions.json
+
+Pods/
diff --git a/packages/firebase_performance/example/ios/Flutter/AppFrameworkInfo.plist b/packages/firebase_performance/example/ios/Flutter/AppFrameworkInfo.plist
new file mode 100644
index 0000000..6c2de80
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Flutter/AppFrameworkInfo.plist
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>UIRequiredDeviceCapabilities</key>
+  <array>
+    <string>arm64</string>
+  </array>
+  <key>MinimumOSVersion</key>
+  <string>8.0</string>
+</dict>
+</plist>
diff --git a/packages/firebase_performance/example/ios/Flutter/Debug.xcconfig b/packages/firebase_performance/example/ios/Flutter/Debug.xcconfig
new file mode 100644
index 0000000..e8efba1
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Flutter/Debug.xcconfig
@@ -0,0 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"
diff --git a/packages/firebase_performance/example/ios/Flutter/Release.xcconfig b/packages/firebase_performance/example/ios/Flutter/Release.xcconfig
new file mode 100644
index 0000000..399e934
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Flutter/Release.xcconfig
@@ -0,0 +1,2 @@
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"
diff --git a/packages/firebase_performance/example/ios/Podfile b/packages/firebase_performance/example/ios/Podfile
new file mode 100644
index 0000000..dc1da60
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Podfile
@@ -0,0 +1,63 @@
+# Uncomment this line to define a global platform for your project
+# platform :ios, '9.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+def parse_KV_file(file, separator='=')
+  file_abs_path = File.expand_path(file)
+  if !File.exists? file_abs_path
+    return [];
+  end
+  pods_ary = []
+  skip_line_start_symbols = ["#", "/"]
+  File.foreach(file_abs_path) { |line|
+      next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
+      plugin = line.split(pattern=separator)
+      if plugin.length == 2
+        podname = plugin[0].strip()
+        path = plugin[1].strip()
+        podpath = File.expand_path("#{path}", file_abs_path)
+        pods_ary.push({:name => podname, :path => podpath});
+      else
+        puts "Invalid plugin specification: #{line}"
+      end
+  }
+  return pods_ary
+end
+
+target 'Runner' do
+  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
+  # referring to absolute paths on developers' machines.
+  system('rm -rf Pods/.symlinks')
+  system('mkdir -p Pods/.symlinks/plugins')
+
+  # Flutter Pods
+  generated_xcode_build_settings = parse_KV_file('./Flutter/Generated.xcconfig')
+  if generated_xcode_build_settings.empty?
+    puts "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter packages get is executed first."
+  end
+  generated_xcode_build_settings.map { |p|
+    if p[:name] == 'FLUTTER_FRAMEWORK_DIR'
+      symlink = File.join('Pods', '.symlinks', 'flutter')
+      File.symlink(File.dirname(p[:path]), symlink)
+      pod 'Flutter', :path => File.join(symlink, File.basename(p[:path]))
+    end
+  }
+
+  # Plugin Pods
+  plugin_pods = parse_KV_file('../.flutter-plugins')
+  plugin_pods.map { |p|
+    symlink = File.join('Pods', '.symlinks', 'plugins', p[:name])
+    File.symlink(p[:path], symlink)
+    pod p[:name], :path => File.join(symlink, 'ios')
+  }
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    target.build_configurations.each do |config|
+      config.build_settings['ENABLE_BITCODE'] = 'NO'
+    end
+  end
+end
diff --git a/packages/firebase_performance/example/ios/Runner.xcodeproj/project.pbxproj b/packages/firebase_performance/example/ios/Runner.xcodeproj/project.pbxproj
new file mode 100644
index 0000000..ee8a6c5
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner.xcodeproj/project.pbxproj
@@ -0,0 +1,501 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */ = {isa = PBXBuildFile; fileRef = 2D5378251FAA1A9400D5DBA9 /* flutter_assets */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
+		3B80C3941E831B6300D905FE /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; };
+		3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		4F30D5F713FAE573DBE831BD /* libPods-Runner.a in Frameworks */ = {isa = PBXBuildFile; fileRef = AADA30890C75F448DA1E1040 /* libPods-Runner.a */; };
+		8FF7AD1520880821009B43A2 /* GoogleService-Info.plist in Resources */ = {isa = PBXBuildFile; fileRef = 8FF7AD1420880820009B43A2 /* GoogleService-Info.plist */; };
+		9705A1C61CF904A100538489 /* Flutter.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9740EEBA1CF902C7004384FC /* Flutter.framework */; };
+		9705A1C71CF904A300538489 /* Flutter.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9740EEBA1CF902C7004384FC /* Flutter.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		9740EEB41CF90195004384FC /* Debug.xcconfig in Resources */ = {isa = PBXBuildFile; fileRef = 9740EEB21CF90195004384FC /* Debug.xcconfig */; };
+		9740EEB51CF90195004384FC /* Generated.xcconfig in Resources */ = {isa = PBXBuildFile; fileRef = 9740EEB31CF90195004384FC /* Generated.xcconfig */; };
+		978B8F6F1D3862AE00F588F7 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 7AFFD8EE1D35381100E5BB4D /* AppDelegate.m */; };
+		97C146F31CF9000F007C117D /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 97C146F21CF9000F007C117D /* main.m */; };
+		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
+		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
+		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+				3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */,
+				9705A1C71CF904A300538489 /* Flutter.framework in Embed Frameworks */,
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
+		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
+		2D5378251FAA1A9400D5DBA9 /* flutter_assets */ = {isa = PBXFileReference; lastKnownFileType = folder; name = flutter_assets; path = Flutter/flutter_assets; sourceTree = SOURCE_ROOT; };
+		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
+		3B80C3931E831B6300D905FE /* App.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = App.framework; path = Flutter/App.framework; sourceTree = "<group>"; };
+		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
+		7AFFD8ED1D35381100E5BB4D /* AppDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
+		7AFFD8EE1D35381100E5BB4D /* AppDelegate.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
+		8FF7AD1420880820009B43A2 /* GoogleService-Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = "GoogleService-Info.plist"; sourceTree = "<group>"; };
+		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Debug.xcconfig; path = Flutter/Debug.xcconfig; sourceTree = "<group>"; };
+		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
+		9740EEBA1CF902C7004384FC /* Flutter.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Flutter.framework; path = Flutter/Flutter.framework; sourceTree = "<group>"; };
+		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		97C146F21CF9000F007C117D /* main.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
+		97C146FB1CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
+		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
+		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
+		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		AADA30890C75F448DA1E1040 /* libPods-Runner.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-Runner.a"; sourceTree = BUILT_PRODUCTS_DIR; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		97C146EB1CF9000F007C117D /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				9705A1C61CF904A100538489 /* Flutter.framework in Frameworks */,
+				3B80C3941E831B6300D905FE /* App.framework in Frameworks */,
+				4F30D5F713FAE573DBE831BD /* libPods-Runner.a in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		556632B50846818D9A90AA4B /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				AADA30890C75F448DA1E1040 /* libPods-Runner.a */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+		9740EEB11CF90186004384FC /* Flutter */ = {
+			isa = PBXGroup;
+			children = (
+				2D5378251FAA1A9400D5DBA9 /* flutter_assets */,
+				3B80C3931E831B6300D905FE /* App.framework */,
+				3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
+				9740EEBA1CF902C7004384FC /* Flutter.framework */,
+				9740EEB21CF90195004384FC /* Debug.xcconfig */,
+				7AFA3C8E1D35360C0083082E /* Release.xcconfig */,
+				9740EEB31CF90195004384FC /* Generated.xcconfig */,
+			);
+			name = Flutter;
+			sourceTree = "<group>";
+		};
+		97C146E51CF9000F007C117D = {
+			isa = PBXGroup;
+			children = (
+				9740EEB11CF90186004384FC /* Flutter */,
+				97C146F01CF9000F007C117D /* Runner */,
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+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
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+		};
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+			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
+			buildSettings = {
+				ARCHS = arm64;
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CURRENT_PROJECT_VERSION = 1;
+				ENABLE_BITCODE = NO;
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+					"$(PROJECT_DIR)/Flutter",
+				);
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+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LIBRARY_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)/Flutter",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = io.flutter.plugins.firebasePerformanceExample;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Debug;
+		};
+		97C147071CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
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+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CURRENT_PROJECT_VERSION = 1;
+				ENABLE_BITCODE = NO;
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+					"$(PROJECT_DIR)/Flutter",
+				);
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+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LIBRARY_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)/Flutter",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = io.flutter.plugins.firebasePerformanceExample;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Release;
+		};
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+
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+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
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+			buildConfigurations = (
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+				97C147071CF9000F007C117D /* Release */,
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+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}
diff --git a/packages/firebase_performance/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/packages/firebase_performance/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..1d526a1
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>
diff --git a/packages/firebase_performance/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/packages/firebase_performance/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
new file mode 100644
index 0000000..1263ac8
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0910"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/packages/firebase_performance/example/ios/Runner.xcworkspace/contents.xcworkspacedata b/packages/firebase_performance/example/ios/Runner.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..21a3cc1
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>
diff --git a/packages/firebase_performance/example/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/packages/firebase_performance/example/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/packages/firebase_performance/example/ios/Runner/AppDelegate.h b/packages/firebase_performance/example/ios/Runner/AppDelegate.h
new file mode 100644
index 0000000..36e21bb
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/AppDelegate.h
@@ -0,0 +1,6 @@
+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : FlutterAppDelegate
+
+@end
diff --git a/packages/firebase_performance/example/ios/Runner/AppDelegate.m b/packages/firebase_performance/example/ios/Runner/AppDelegate.m
new file mode 100644
index 0000000..59a72e9
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/AppDelegate.m
@@ -0,0 +1,13 @@
+#include "AppDelegate.h"
+#include "GeneratedPluginRegistrant.h"
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  [GeneratedPluginRegistrant registerWithRegistry:self];
+  // Override point for customization after application launch.
+  return [super application:application didFinishLaunchingWithOptions:launchOptions];
+}
+
+@end
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
new file mode 100644
index 0000000..d36b1fa
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
new file mode 100644
index 0000000..3d43d11
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
new file mode 100644
index 0000000..28c6bf0
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
new file mode 100644
index 0000000..2ccbfd9
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
new file mode 100644
index 0000000..f091b6b
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
new file mode 100644
index 0000000..4cde121
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
new file mode 100644
index 0000000..d0ef06e
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
new file mode 100644
index 0000000..dcdc230
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
new file mode 100644
index 0000000..2ccbfd9
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
new file mode 100644
index 0000000..c8f9ed8
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
new file mode 100644
index 0000000..a6d6b86
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
new file mode 100644
index 0000000..a6d6b86
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
new file mode 100644
index 0000000..75b2d16
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
new file mode 100644
index 0000000..c4df70d
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
new file mode 100644
index 0000000..6a84f41
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
new file mode 100644
index 0000000..d0e1f58
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
new file mode 100644
index 0000000..0bedcf2
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
new file mode 100644
index 0000000..9da19ea
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
new file mode 100644
index 0000000..9da19ea
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
new file mode 100644
index 0000000..9da19ea
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
Binary files differ
diff --git a/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md
new file mode 100644
index 0000000..89c2725
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md
@@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.
\ No newline at end of file
diff --git a/packages/firebase_performance/example/ios/Runner/Base.lproj/LaunchScreen.storyboard b/packages/firebase_performance/example/ios/Runner/Base.lproj/LaunchScreen.storyboard
new file mode 100644
index 0000000..f2e259c
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Base.lproj/LaunchScreen.storyboard
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>
diff --git a/packages/firebase_performance/example/ios/Runner/Base.lproj/Main.storyboard b/packages/firebase_performance/example/ios/Runner/Base.lproj/Main.storyboard
new file mode 100644
index 0000000..f3c2851
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Base.lproj/Main.storyboard
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>
diff --git a/packages/firebase_performance/example/ios/Runner/GoogleService-Info.plist b/packages/firebase_performance/example/ios/Runner/GoogleService-Info.plist
new file mode 100644
index 0000000..2064ea6
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/GoogleService-Info.plist
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>AD_UNIT_ID_FOR_BANNER_TEST</key>
+	<string>ca-app-pub-3940256099942544/2934735716</string>
+	<key>AD_UNIT_ID_FOR_INTERSTITIAL_TEST</key>
+	<string>ca-app-pub-3940256099942544/4411468910</string>
+	<key>CLIENT_ID</key>
+	<string>479882132969-sbr97a40ji0hqujs9ksm2lrm1mfhdum3.apps.googleusercontent.com</string>
+	<key>REVERSED_CLIENT_ID</key>
+	<string>com.googleusercontent.apps.479882132969-sbr97a40ji0hqujs9ksm2lrm1mfhdum3</string>
+	<key>API_KEY</key>
+	<string>AIzaSyBECOwLTAN6PU4Aet1b2QLGIb3kRK8Xjew</string>
+	<key>GCM_SENDER_ID</key>
+	<string>479882132969</string>
+	<key>PLIST_VERSION</key>
+	<string>1</string>
+	<key>BUNDLE_ID</key>
+	<string>io.flutter.plugins.firebasePerformanceExample</string>
+	<key>PROJECT_ID</key>
+	<string>my-flutter-proj</string>
+	<key>STORAGE_BUCKET</key>
+	<string>my-flutter-proj.appspot.com</string>
+	<key>IS_ADS_ENABLED</key>
+	<true></true>
+	<key>IS_ANALYTICS_ENABLED</key>
+	<false></false>
+	<key>IS_APPINVITE_ENABLED</key>
+	<false></false>
+	<key>IS_GCM_ENABLED</key>
+	<true></true>
+	<key>IS_SIGNIN_ENABLED</key>
+	<true></true>
+	<key>GOOGLE_APP_ID</key>
+	<string>1:479882132969:ios:0f2b615ff954f3ae</string>
+	<key>DATABASE_URL</key>
+	<string>https://my-flutter-proj.firebaseio.com</string>
+</dict>
+</plist>
\ No newline at end of file
diff --git a/packages/firebase_performance/example/ios/Runner/Info.plist b/packages/firebase_performance/example/ios/Runner/Info.plist
new file mode 100644
index 0000000..930df5b
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/Info.plist
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>firebase_performance_example</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>arm64</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<false/>
+</dict>
+</plist>
diff --git a/packages/firebase_performance/example/ios/Runner/main.m b/packages/firebase_performance/example/ios/Runner/main.m
new file mode 100644
index 0000000..dff6597
--- /dev/null
+++ b/packages/firebase_performance/example/ios/Runner/main.m
@@ -0,0 +1,9 @@
+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char* argv[]) {
+  @autoreleasepool {
+    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+  }
+}
diff --git a/packages/firebase_performance/example/lib/main.dart b/packages/firebase_performance/example/lib/main.dart
new file mode 100644
index 0000000..8600ff3
--- /dev/null
+++ b/packages/firebase_performance/example/lib/main.dart
@@ -0,0 +1,93 @@
+// Copyright 2017, the Flutter project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+import 'package:firebase_performance/firebase_performance.dart';
+
+void main() => runApp(new MyApp());
+
+class MyApp extends StatefulWidget {
+  @override
+  _MyAppState createState() => new _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  FirebasePerformance _performance = FirebasePerformance.instance;
+  bool _isPerformanceCollectionEnabled = false;
+  String _performanceCollectionMessage =
+      'Unknown status of performance collection.';
+  bool _traceHasRan = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _togglePerformanceCollection();
+  }
+
+  Future<void> _togglePerformanceCollection() async {
+    await _performance
+        .setPerformanceCollectionEnabled(!_isPerformanceCollectionEnabled);
+
+    final bool isEnabled = await _performance.isPerformanceCollectionEnabled();
+    setState(() {
+      _isPerformanceCollectionEnabled = isEnabled;
+      _performanceCollectionMessage = _isPerformanceCollectionEnabled
+          ? 'Performance collection is enabled.'
+          : 'Performance collection is disabled.';
+    });
+  }
+
+  Future<void> _testTrace() async {
+    final Trace trace = _performance.newTrace("test");
+    trace.incrementCounter("counter1", 16);
+    trace.putAttribute("favorite_color", "blue");
+
+    await trace.start();
+
+    int sum = 0;
+    for (int i = 0; i < 10000000; i++) {
+      sum += i;
+    }
+    print(sum);
+
+    await trace.stop();
+
+    setState(() {
+      _traceHasRan = true;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return new MaterialApp(
+      home: new Scaffold(
+        appBar: new AppBar(
+          title: const Text('Firebase Performance Example'),
+        ),
+        body: new Center(
+            child: new Column(
+          children: <Widget>[
+            new Text(_performanceCollectionMessage),
+            new RaisedButton(
+              onPressed: _togglePerformanceCollection,
+              child: const Text('Toggle Data Collection'),
+            ),
+            new RaisedButton(
+              onPressed: _testTrace,
+              child: const Text('Run Trace'),
+            ),
+            new Text(
+              _traceHasRan ? 'Trace Ran!' : '',
+              style: const TextStyle(
+                  color: Colors.lightGreenAccent, fontSize: 25.0),
+            )
+          ],
+        )),
+      ),
+    );
+  }
+}
diff --git a/packages/firebase_performance/example/pubspec.yaml b/packages/firebase_performance/example/pubspec.yaml
new file mode 100644
index 0000000..f4370fe
--- /dev/null
+++ b/packages/firebase_performance/example/pubspec.yaml
@@ -0,0 +1,55 @@
+name: firebase_performance_example
+description: Demonstrates how to use the firebase_performance plugin.
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+  firebase_performance:
+    path: ../
+
+# For information on the generic Dart part of this file, see the
+# following page: https://www.dartlang.org/tools/pub/pubspec
+
+# The following section is specific to Flutter.
+flutter:
+
+  # The following line ensures that the Material Icons font is
+  # included with your application, so that you can use the icons in
+  # the material Icons class.
+  uses-material-design: true
+
+  # To add assets to your application, add an assets section, like this:
+  # assets:
+  #  - images/a_dot_burr.jpeg
+  #  - images/a_dot_ham.jpeg
+
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.io/assets-and-images/#resolution-aware.
+
+  # For details regarding adding assets from package dependencies, see
+  # https://flutter.io/assets-and-images/#from-packages
+
+  # To add custom fonts to your application, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  # fonts:
+  #   - family: Schyler
+  #     fonts:
+  #       - asset: fonts/Schyler-Regular.ttf
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts from package dependencies, 
+  # see https://flutter.io/custom-fonts/#from-packages
diff --git a/packages/firebase_performance/firebase_performance.iml b/packages/firebase_performance/firebase_performance.iml
new file mode 100644
index 0000000..73e7ebd
--- /dev/null
+++ b/packages/firebase_performance/firebase_performance.iml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/lib" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/.dart_tool" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea" />
+      <excludeFolder url="file://$MODULE_DIR$/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/build" />
+      <excludeFolder url="file://$MODULE_DIR$/example/.dart_tool" />
+      <excludeFolder url="file://$MODULE_DIR$/example/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/example/build" />
+    </content>
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Dart SDK" level="project" />
+    <orderEntry type="library" name="Flutter Plugins" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/packages/firebase_performance/firebase_performance_android.iml b/packages/firebase_performance/firebase_performance_android.iml
new file mode 100644
index 0000000..ac5d744
--- /dev/null
+++ b/packages/firebase_performance/firebase_performance_android.iml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="android" name="Android">
+      <configuration>
+        <option name="ALLOW_USER_CONFIGURATION" value="false" />
+        <option name="GEN_FOLDER_RELATIVE_PATH_APT" value="/android/gen" />
+        <option name="GEN_FOLDER_RELATIVE_PATH_AIDL" value="/android/gen" />
+        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/android/AndroidManifest.xml" />
+        <option name="RES_FOLDER_RELATIVE_PATH" value="/android/res" />
+        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/android/assets" />
+        <option name="LIBS_FOLDER_RELATIVE_PATH" value="/android/libs" />
+        <option name="PROGUARD_LOGS_FOLDER_RELATIVE_PATH" value="/android/proguard_logs" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/android">
+      <sourceFolder url="file://$MODULE_DIR$/android/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/android/gen" isTestSource="false" generated="true" />
+    </content>
+    <content url="file://$MODULE_DIR$/example/android">
+      <sourceFolder url="file://$MODULE_DIR$/example/android/app/src/main/java" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="Android API 25 Platform" jdkType="Android SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Flutter for Android" level="project" />
+  </component>
+</module>
diff --git a/packages/firebase_performance/ios/.gitignore b/packages/firebase_performance/ios/.gitignore
new file mode 100644
index 0000000..710ec6c
--- /dev/null
+++ b/packages/firebase_performance/ios/.gitignore
@@ -0,0 +1,36 @@
+.idea/
+.vagrant/
+.sconsign.dblite
+.svn/
+
+.DS_Store
+*.swp
+profile
+
+DerivedData/
+build/
+GeneratedPluginRegistrant.h
+GeneratedPluginRegistrant.m
+
+.generated/
+
+*.pbxuser
+*.mode1v3
+*.mode2v3
+*.perspectivev3
+
+!default.pbxuser
+!default.mode1v3
+!default.mode2v3
+!default.perspectivev3
+
+xcuserdata
+
+*.moved-aside
+
+*.pyc
+*sync/
+Icon?
+.tags*
+
+/Flutter/Generated.xcconfig
diff --git a/packages/firebase_performance/ios/Assets/.gitkeep b/packages/firebase_performance/ios/Assets/.gitkeep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/packages/firebase_performance/ios/Assets/.gitkeep
diff --git a/packages/firebase_performance/ios/Classes/FirebasePerformancePlugin.h b/packages/firebase_performance/ios/Classes/FirebasePerformancePlugin.h
new file mode 100644
index 0000000..7d3fe91
--- /dev/null
+++ b/packages/firebase_performance/ios/Classes/FirebasePerformancePlugin.h
@@ -0,0 +1,4 @@
+#import <Flutter/Flutter.h>
+
+@interface FLTFirebasePerformancePlugin : NSObject<FlutterPlugin>
+@end
diff --git a/packages/firebase_performance/ios/Classes/FirebasePerformancePlugin.m b/packages/firebase_performance/ios/Classes/FirebasePerformancePlugin.m
new file mode 100644
index 0000000..ef7000b
--- /dev/null
+++ b/packages/firebase_performance/ios/Classes/FirebasePerformancePlugin.m
@@ -0,0 +1,79 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "FirebasePerformancePlugin.h"
+
+#import <Firebase/Firebase.h>
+
+@interface FLTFirebasePerformancePlugin ()
+@property(nonatomic, retain) NSMutableDictionary *traces;
+@end
+
+@implementation FLTFirebasePerformancePlugin
++ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
+  FlutterMethodChannel *channel =
+      [FlutterMethodChannel methodChannelWithName:@"plugins.flutter.io/firebase_performance"
+                                  binaryMessenger:[registrar messenger]];
+  FLTFirebasePerformancePlugin *instance = [[FLTFirebasePerformancePlugin alloc] init];
+  [registrar addMethodCallDelegate:instance channel:channel];
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    if (![FIRApp defaultApp]) {
+      [FIRApp configure];
+      _traces = [[NSMutableDictionary alloc] init];
+    }
+  }
+
+  return self;
+}
+
+- (void)handleMethodCall:(FlutterMethodCall *)call result:(FlutterResult)result {
+  if ([@"FirebasePerformance#isPerformanceCollectionEnabled" isEqualToString:call.method]) {
+    result(@([[FIRPerformance sharedInstance] isDataCollectionEnabled]));
+  } else if ([@"FirebasePerformance#setPerformanceCollectionEnabled" isEqualToString:call.method]) {
+    NSNumber *enable = call.arguments;
+    [[FIRPerformance sharedInstance] setDataCollectionEnabled:[enable boolValue]];
+    result(nil);
+  } else if ([@"Trace#start" isEqualToString:call.method]) {
+    [self handleTraceStart:call result:result];
+  } else if ([@"Trace#stop" isEqualToString:call.method]) {
+    [self handleTraceStop:call result:result];
+  } else {
+    result(FlutterMethodNotImplemented);
+  }
+}
+
+- (void)handleTraceStart:(FlutterMethodCall *)call result:(FlutterResult)result {
+  NSNumber *handle = call.arguments[@"handle"];
+  NSString *name = call.arguments[@"name"];
+
+  FIRTrace *trace = [[FIRPerformance sharedInstance] traceWithName:name];
+  [_traces setObject:trace forKey:handle];
+  [trace start];
+  result(nil);
+}
+
+- (void)handleTraceStop:(FlutterMethodCall *)call result:(FlutterResult)result {
+  NSNumber *handle = call.arguments[@"handle"];
+  FIRTrace *trace = [_traces objectForKey:handle];
+
+  NSDictionary *counters = call.arguments[@"counters"];
+  [counters enumerateKeysAndObjectsUsingBlock:^(NSString *key, NSNumber *value, BOOL *stop) {
+    [trace incrementCounterNamed:key by:[value integerValue]];
+  }];
+
+  NSDictionary *attributes = call.arguments[@"attributes"];
+  [attributes enumerateKeysAndObjectsUsingBlock:^(NSString *key, NSString *value, BOOL *stop) {
+    [trace setValue:key forAttribute:value];
+  }];
+
+  [trace stop];
+  [_traces removeObjectForKey:handle];
+  result(nil);
+}
+
+@end
diff --git a/packages/firebase_performance/ios/firebase_performance.podspec b/packages/firebase_performance/ios/firebase_performance.podspec
new file mode 100644
index 0000000..cb981c5
--- /dev/null
+++ b/packages/firebase_performance/ios/firebase_performance.podspec
@@ -0,0 +1,22 @@
+#
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html
+#
+Pod::Spec.new do |s|
+  s.name             = 'firebase_performance'
+  s.version          = '0.0.1'
+  s.summary          = 'Firebase Performance plugin for Flutter.'
+  s.description      = <<-DESC
+Firebase Performance plugin for Flutter.
+                       DESC
+  s.homepage         = 'https://github.com/flutter/plugins/tree/master/packages/firebase_performance'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Flutter Team' => 'flutter-dev@googlegroups.com' }
+  s.source           = { :path => '.' }
+  s.source_files = 'Classes/**/*'
+  s.public_header_files = 'Classes/**/*.h'
+  s.dependency 'Flutter'
+  s.dependency 'Firebase/Core'
+  s.dependency 'Firebase/Performance'
+  s.ios.deployment_target = '8.0'
+end
+
diff --git a/packages/firebase_performance/lib/firebase_performance.dart b/packages/firebase_performance/lib/firebase_performance.dart
new file mode 100644
index 0000000..ae6167d
--- /dev/null
+++ b/packages/firebase_performance/lib/firebase_performance.dart
@@ -0,0 +1,14 @@
+// Copyright 2017, the Flutter project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library firebase_performance;
+
+import 'dart:async';
+import 'dart:collection';
+
+import 'package:flutter/services.dart';
+import 'package:flutter/foundation.dart';
+
+part 'src/firebase_performance.dart';
+part 'src/trace.dart';
diff --git a/packages/firebase_performance/lib/src/firebase_performance.dart b/packages/firebase_performance/lib/src/firebase_performance.dart
new file mode 100644
index 0000000..f94b922
--- /dev/null
+++ b/packages/firebase_performance/lib/src/firebase_performance.dart
@@ -0,0 +1,62 @@
+// Copyright 2017, the Flutter project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+part of firebase_performance;
+
+/// The Firebase Performance API.
+///
+/// You can get an instance by calling [FirebasePerformance.instance].
+class FirebasePerformance {
+  FirebasePerformance._();
+
+  static int _traceCount = 0;
+
+  @visibleForTesting
+  static const MethodChannel channel =
+      const MethodChannel('plugins.flutter.io/firebase_performance');
+
+  /// Singleton of [FirebasePerformance].
+  static final FirebasePerformance instance = new FirebasePerformance._();
+
+  /// Determines whether performance monitoring is enabled or disabled.
+  ///
+  /// true if performance monitoring is enabled and false if performance
+  /// monitoring is disabled. This is for dynamic enable/disable state. This
+  /// does not reflect whether instrumentation is enabled/disabled.
+  Future<bool> isPerformanceCollectionEnabled() async {
+    final bool isEnabled = await channel
+        .invokeMethod('FirebasePerformance#isPerformanceCollectionEnabled');
+    return isEnabled;
+  }
+
+  /// Enables or disables performance monitoring.
+  ///
+  /// Enables or disables performance monitoring. This setting is persisted and
+  /// applied on future invocations of your application. By default, performance
+  /// monitoring is enabled.
+  Future<void> setPerformanceCollectionEnabled(bool enable) async {
+    await channel.invokeMethod(
+        'FirebasePerformance#setPerformanceCollectionEnabled', enable);
+  }
+
+  /// Creates a [Trace] object with given [name].
+  ///
+  /// [name]: name of the trace. Requires no leading or trailing whitespace, no
+  /// leading underscore _ character, max length of [Trace.maxTraceNameLength]
+  /// characters.
+  Trace newTrace(String name) {
+    return new Trace._(_traceCount++, name);
+  }
+
+  /// Creates a [Trace] object with given [name] and start the trace.
+  ///
+  /// [name]: name of the trace. Requires no leading or trailing whitespace, no
+  /// leading underscore _ character, max length of [Trace.maxTraceNameLength]
+  /// characters.
+  static Future<Trace> startTrace(String name) async {
+    final Trace trace = instance.newTrace(name);
+    await trace.start();
+    return trace;
+  }
+}
diff --git a/packages/firebase_performance/lib/src/trace.dart b/packages/firebase_performance/lib/src/trace.dart
new file mode 100644
index 0000000..9da17a5
--- /dev/null
+++ b/packages/firebase_performance/lib/src/trace.dart
@@ -0,0 +1,131 @@
+// Copyright 2017, the Flutter project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+part of firebase_performance;
+
+/// Trace allows you to set beginning and end of a certain action in your app.
+class Trace {
+  Trace._(this._handle, this._name) {
+    assert(_name != null);
+    assert(!_name.startsWith(new RegExp(r'[_\s]')));
+    assert(!_name.contains(new RegExp(r'[_\s]$')));
+    assert(_name.length <= maxTraceNameLength);
+  }
+
+  /// Maximum allowed length of a key passed to [putAttribute].
+  static const int maxAttributeKeyLength = 40;
+
+  /// Maximum allowed length of a value passed to [putAttribute].
+  static const int maxAttributeValueLength = 100;
+
+  /// Maximum allowed number of attributes that can be added.
+  static const int maxTraceCustomAttributes = 5;
+
+  /// Maximum allowed length of the name of a [Trace].
+  static const int maxTraceNameLength = 100;
+
+  final int _handle;
+  final String _name;
+
+  bool _hasStarted = false;
+  bool _hasStopped = false;
+
+  final HashMap<String, int> _counters = new HashMap<String, int>();
+  final HashMap<String, String> _attributes = new HashMap<String, String>();
+
+  /// All the attributes added to this trace.
+  Map<String, String> get attributes =>
+      Map<String, String>.unmodifiable(_attributes);
+
+  /// Starts this trace.
+  ///
+  /// Using ```await``` with this method is only necessary when accurate timing
+  /// is relevant.
+  Future<void> start() {
+    assert(!_hasStarted);
+
+    _hasStarted = true;
+    return FirebasePerformance.channel
+        .invokeMethod('Trace#start', <String, dynamic>{
+      'handle': _handle,
+      'name': _name,
+    });
+  }
+
+  /// Stops this trace.
+  ///
+  /// Using ```await``` with this method is only necessary when accurate timing
+  /// is relevant.
+  Future<void> stop() {
+    assert(!_hasStopped);
+    assert(_hasStarted);
+
+    final Map<String, dynamic> data = <String, dynamic>{
+      'handle': _handle,
+      'name': _name,
+      'counters': _counters,
+      'attributes': _attributes,
+    };
+
+    _hasStopped = true;
+    return FirebasePerformance.channel.invokeMethod('Trace#stop', data);
+  }
+
+  /// Increments the counter with the given [name] by [incrementBy].
+  ///
+  /// The counter is incremented by 1 if [incrementBy] was not passed. If a
+  /// counter does not already exist, a new one will be created. If the trace
+  /// has not been started or has already been stopped, returns immediately
+  /// without taking action.
+  ///
+  /// The name of the counter requires no leading or
+  /// trailing whitespace, no leading underscore _ character, and max length of
+  /// 32 characters.
+  void incrementCounter(String name, [int incrementBy = 1]) {
+    assert(!_hasStopped);
+    assert(name != null);
+    assert(!name.startsWith(new RegExp(r'[_\s]')));
+    assert(!name.contains(new RegExp(r'[_\s]$')));
+    assert(name.length <= 32);
+
+    _counters.putIfAbsent(name, () => 0);
+    _counters[name] += incrementBy;
+  }
+
+  /// Sets a String [value] for the specified [attribute].
+  ///
+  /// Updates the value of the attribute if the attribute already exists. If the
+  /// trace has been stopped, this method returns without adding the attribute.
+  /// The maximum number of attributes that can be added to a Trace are
+  /// [maxTraceCustomAttributes].
+  ///
+  /// Name of the attribute has max length of [maxAttributeKeyLength]
+  /// characters. Value of the attribute has max length of
+  /// [maxAttributeValueLength] characters.
+  void putAttribute(String attribute, String value) {
+    assert(!_hasStopped);
+    assert(attribute != null);
+    assert(!attribute.startsWith(new RegExp(r'[_\s]')));
+    assert(!attribute.contains(new RegExp(r'[_\s]$')));
+    assert(attribute.length <= maxAttributeKeyLength);
+    assert(value.length <= maxAttributeValueLength);
+    assert(_attributes.length < maxTraceCustomAttributes);
+
+    _attributes.putIfAbsent(attribute, () => value);
+    _attributes[attribute] = value;
+  }
+
+  /// Removes an already added [attribute].
+  ///
+  /// If the trace has been stopped, this method returns without removing the
+  /// attribute.
+  void removeAttribute(String attribute) {
+    assert(!_hasStopped);
+
+    _attributes.remove(attribute);
+  }
+
+  /// Returns the value of an [attribute].
+  String getAttribute(String attribute) => _attributes[attribute];
+}
diff --git a/packages/firebase_performance/pubspec.yaml b/packages/firebase_performance/pubspec.yaml
new file mode 100644
index 0000000..b1848f4
--- /dev/null
+++ b/packages/firebase_performance/pubspec.yaml
@@ -0,0 +1,25 @@
+name: firebase_performance
+description: Flutter plugin for Google Performance Monitoring for Firebase, an app
+  measurement solution that monitors traces and HTTP/S network requests on Android and
+  iOS.
+version: 0.0.1
+author: Flutter Team <flutter-dev@googlegroups.com>
+homepage: https://github.com/flutter/plugins/tree/master/packages/firebase_performance
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+flutter:
+  plugin:
+    androidPackage: io.flutter.plugins.firebaseperformance
+    iosPrefix: FLT
+    pluginClass: FirebasePerformancePlugin
+
+environment:
+  sdk: ">=2.0.0-dev.28.0 <3.0.0"
+  flutter: ">=0.2.4 <2.0.0"
\ No newline at end of file
diff --git a/packages/firebase_performance/test/firebase_performance_test.dart b/packages/firebase_performance/test/firebase_performance_test.dart
new file mode 100644
index 0000000..e370f92
--- /dev/null
+++ b/packages/firebase_performance/test/firebase_performance_test.dart
@@ -0,0 +1,196 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/services.dart';
+
+import 'package:firebase_performance/firebase_performance.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('$FirebasePerformance', () {
+    final FirebasePerformance performance = FirebasePerformance.instance;
+    final List<MethodCall> log = <MethodCall>[];
+    bool performanceCollectionEnable = true;
+    int currentTraceHandle;
+
+    setUp(() {
+      FirebasePerformance.channel
+          .setMockMethodCallHandler((MethodCall methodCall) async {
+        log.add(methodCall);
+        switch (methodCall.method) {
+          case 'FirebasePerformance#isPerformanceCollectionEnabled':
+            return performanceCollectionEnable;
+          case 'FirebasePerformance#setPerformanceCollectionEnabled':
+            performanceCollectionEnable = methodCall.arguments;
+            return null;
+          case 'Trace#start':
+            currentTraceHandle = methodCall.arguments['handle'];
+            return null;
+          case 'Trace#stop':
+            return null;
+          default:
+            return null;
+        }
+      });
+      log.clear();
+    });
+
+    test('isPerformanceCollectionEnabled', () async {
+      final bool enabled = await performance.isPerformanceCollectionEnabled();
+
+      expect(performanceCollectionEnable, enabled);
+      expect(log, <Matcher>[
+        isMethodCall('FirebasePerformance#isPerformanceCollectionEnabled',
+            arguments: null),
+      ]);
+    });
+
+    test('setPerformanceCollectionEnabled', () async {
+      await performance.setPerformanceCollectionEnabled(true);
+      performanceCollectionEnable = true;
+
+      await performance.setPerformanceCollectionEnabled(false);
+      performanceCollectionEnable = false;
+
+      expect(log, <Matcher>[
+        isMethodCall('FirebasePerformance#setPerformanceCollectionEnabled',
+            arguments: true),
+        isMethodCall('FirebasePerformance#setPerformanceCollectionEnabled',
+            arguments: false),
+      ]);
+    });
+
+    test('newTrace', () async {
+      final Trace trace = performance.newTrace('test-trace');
+      await trace.start();
+
+      expect(log, <Matcher>[
+        isMethodCall('Trace#start', arguments: <String, Object>{
+          'handle': currentTraceHandle,
+          'name': 'test-trace',
+        }),
+      ]);
+    });
+
+    test('startTrace', () async {
+      await FirebasePerformance.startTrace('startTrace-test');
+
+      expect(log, <Matcher>[
+        isMethodCall('Trace#start', arguments: <String, Object>{
+          'handle': currentTraceHandle,
+          'name': 'startTrace-test',
+        }),
+      ]);
+    });
+
+    group('$Trace', () {
+      Trace testTrace;
+
+      setUp(() {
+        testTrace = performance.newTrace('test');
+      });
+
+      test('start', () async {
+        await testTrace.start();
+
+        expect(log, <Matcher>[
+          isMethodCall('Trace#start', arguments: <String, Object>{
+            'handle': currentTraceHandle,
+            'name': 'test',
+          }),
+        ]);
+      });
+
+      test('stop', () async {
+        await testTrace.start();
+        await testTrace.stop();
+
+        expect(log, <Matcher>[
+          isMethodCall('Trace#start', arguments: <String, Object>{
+            'handle': currentTraceHandle,
+            'name': 'test',
+          }),
+          isMethodCall('Trace#stop', arguments: <String, dynamic>{
+            'handle': currentTraceHandle,
+            'name': 'test',
+            'counters': <String, int>{},
+            'attributes': <String, String>{},
+          }),
+        ]);
+      });
+
+      test('incrementCounter', () async {
+        final Trace trace = performance.newTrace("test");
+        trace.incrementCounter('counter1');
+
+        trace.incrementCounter('counter2');
+        trace.incrementCounter('counter2');
+
+        trace.incrementCounter('counter3', 5);
+        trace.incrementCounter('counter3', 5);
+
+        trace.incrementCounter('counter4', -5);
+
+        await trace.start();
+        await trace.stop();
+
+        expect(log, <Matcher>[
+          isMethodCall('Trace#start', arguments: <String, Object>{
+            'handle': currentTraceHandle,
+            'name': 'test',
+          }),
+          isMethodCall('Trace#stop', arguments: <String, dynamic>{
+            'handle': currentTraceHandle,
+            'name': 'test',
+            'counters': <String, int>{
+              'counter1': 1,
+              'counter2': 2,
+              'counter3': 10,
+              'counter4': -5,
+            },
+            'attributes': <String, String>{},
+          }),
+        ]);
+      });
+
+      test('putAttribute', () async {
+        testTrace.putAttribute('attr1', 'apple');
+        testTrace.putAttribute('attr2', 'are');
+        expect(testTrace.attributes, <String, String>{
+          'attr1': 'apple',
+          'attr2': 'are',
+        });
+
+        testTrace.putAttribute('attr1', 'delicious');
+        expect(testTrace.attributes, <String, String>{
+          'attr1': 'delicious',
+          'attr2': 'are',
+        });
+      });
+
+      test('removeAttribute', () async {
+        testTrace.putAttribute('attr1', 'apple');
+        testTrace.putAttribute('attr2', 'are');
+        testTrace.removeAttribute('no-attr');
+        expect(testTrace.attributes, <String, String>{
+          'attr1': 'apple',
+          'attr2': 'are',
+        });
+
+        testTrace.removeAttribute('attr1');
+        expect(testTrace.attributes, <String, String>{
+          'attr2': 'are',
+        });
+      });
+
+      test('getAttribute', () {
+        testTrace.putAttribute('attr1', 'apple');
+        testTrace.putAttribute('attr2', 'are');
+        expect(testTrace.getAttribute('attr1'), 'apple');
+
+        expect(testTrace.getAttribute('attr3'), isNull);
+      });
+    });
+  });
+}