[google_maps_flutter] Bump app-facing version for NNBD stable (#3623)

diff --git a/packages/google_maps_flutter/google_maps_flutter/CHANGELOG.md b/packages/google_maps_flutter/google_maps_flutter/CHANGELOG.md
index ef64aac..dae5caf 100644
--- a/packages/google_maps_flutter/google_maps_flutter/CHANGELOG.md
+++ b/packages/google_maps_flutter/google_maps_flutter/CHANGELOG.md
@@ -1,8 +1,4 @@
-## 2.0.0-nullsafety.1
-
-* Fix in example app to properly change marker icon.
-
-## 2.0.0-nullsafety
+## 2.0.0
 
 * Migrate to null-safety
 * BREAKING CHANGE: Passing an unknown map object ID (e.g., MarkerId) to a
diff --git a/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml
index 181550d..35d0da3 100644
--- a/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml
@@ -2,15 +2,13 @@
 description: Demonstrates how to use the google_maps_flutter plugin.
 
 environment:
-  sdk: '>=2.12.0-0 <3.0.0'
+  sdk: '>=2.12.0-259.9.beta <3.0.0'
   flutter: ">=1.22.0"
 
 dependencies:
   flutter:
     sdk: flutter
 
-  # The following adds the Cupertino Icons font to your application.
-  # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^0.1.0
   google_maps_flutter:
     # When depending on this package from a real application you should use:
@@ -26,46 +24,9 @@
     sdk: flutter
   integration_test:
     path: ../../../integration_test
-  pedantic: ^1.8.0
+  pedantic: ^1.10.0
 
-# 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:
     - assets/
-  #  - 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/google_maps_flutter/google_maps_flutter/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter/pubspec.yaml
index fbab152..3d0e794 100644
--- a/packages/google_maps_flutter/google_maps_flutter/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter/pubspec.yaml
@@ -1,13 +1,13 @@
 name: google_maps_flutter
 description: A Flutter plugin for integrating Google Maps in iOS and Android applications.
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_maps_flutter/google_maps_flutter
-version: 2.0.0-nullsafety.1
+version: 2.0.0
 
 dependencies:
   flutter:
     sdk: flutter
-  flutter_plugin_android_lifecycle: ^2.0.0-nullsafety.2
-  google_maps_flutter_platform_interface: ^2.0.0-nullsafety.1
+  flutter_plugin_android_lifecycle: ^2.0.0
+  google_maps_flutter_platform_interface: ^2.0.0
 
 dev_dependencies:
   flutter_test:
@@ -17,10 +17,10 @@
   # https://github.com/dart-lang/pub/issues/2101 is resolved.
   flutter_driver:
     sdk: flutter
-  test: ^1.16.0-nullsafety.17
-  pedantic: ^1.10.0-nullsafety.3
-  plugin_platform_interface: ^1.1.0-nullsafety.2
-  stream_transform: ^2.0.0-nullsafety.0
+  test: ^1.16.0
+  pedantic: ^1.10.0
+  plugin_platform_interface: ">=1.0.0 <3.0.0"
+  stream_transform: ^2.0.0
 
 flutter:
   plugin:
@@ -32,5 +32,5 @@
         pluginClass: FLTGoogleMapsPlugin
 
 environment:
-  sdk: '>=2.12.0-0 <3.0.0'
+  sdk: '>=2.12.0-259.9.beta <3.0.0'
   flutter: ">=1.22.0"