The FLX package should test itself

Rather than using the Flutter unit tests to test FLX, we can just test FLX
directly. Also, clean up the dependencies in the pubspec to match the code.

packages/flx/pubspec.yaml

diff --git a/packages/flx/pubspec.yaml b/packages/flx/pubspec.yaml
index 3b8517a..0e5c7e9 100644
--- a/packages/flx/pubspec.yaml
+++ b/packages/flx/pubspec.yaml
@@ -4,12 +4,13 @@
 description: Library for dealing with Flutter bundle (.flx) files
 homepage: https://github.com/flutter/flutter/tree/master/packages/flx
 dependencies:
+  bignum: ^0.0.7
   asn1lib: ^0.4.1
   cipher: ^0.7.1
   crypto: ^0.9.1
-  path: ^1.3.0
-  sky_services: 0.0.50
-  yaml: ^2.1.3
 
 environment:
   sdk: '>=1.12.0 <2.0.0'
+
+dev_dependencies:
+  test: ^0.12.5

packages/flx/test/bundle_test.dart

diff --git a/packages/unit/test/flx/bundle_test.dart b/packages/flx/test/bundle_test.dart
similarity index 95%
rename from packages/unit/test/flx/bundle_test.dart
rename to packages/flx/test/bundle_test.dart
index 5521ddc..a54ccfe 100644
--- a/packages/unit/test/flx/bundle_test.dart
+++ b/packages/flx/test/bundle_test.dart
@@ -1,11 +1,10 @@
 import 'dart:convert' hide BASE64;
-import 'dart:typed_data';
 import 'dart:io';
+import 'dart:typed_data';
 
 import 'package:crypto/crypto.dart';
-import 'package:flx/signing.dart';
 import 'package:flx/bundle.dart';
-import 'package:path/path.dart' as path;
+import 'package:flx/signing.dart';
 import 'package:test/test.dart';
 
 main() async {
@@ -26,7 +25,7 @@
 
   // Create a temp dir and file for the bundle.
   Directory tempDir = await Directory.systemTemp.createTempSync('bundle_test');
-  String bundlePath = path.join(tempDir.path, 'bundle.flx');
+  String bundlePath = tempDir.path + '/bundle.flx';
 
   AsymmetricKeyPair keyPair = keyPairFromPrivateKeyBytes(kPrivateKeyDER);
   Map<String, dynamic> manifest = JSON.decode(UTF8.decode(

packages/flx/test/signing_test.dart

diff --git a/packages/unit/test/flx/signing_test.dart b/packages/flx/test/signing_test.dart
similarity index 100%
rename from packages/unit/test/flx/signing_test.dart
rename to packages/flx/test/signing_test.dart

packages/updater/lib/main.dart

diff --git a/packages/updater/lib/main.dart b/packages/updater/lib/main.dart
index c363bad..c40c5a4 100644
--- a/packages/updater/lib/main.dart
+++ b/packages/updater/lib/main.dart
@@ -3,10 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:convert';
-import 'dart:math';
 import 'dart:io';
-import 'dart:typed_data';
 
 import 'package:mojo/core.dart';
 import 'package:flutter/services.dart';

travis/setup.sh

diff --git a/travis/setup.sh b/travis/setup.sh
index 59e2192..0d6ac2f 100755
--- a/travis/setup.sh
+++ b/travis/setup.sh
@@ -4,8 +4,9 @@
 pub global activate tuneup
 
 (cd packages/cassowary; pub get)
-(cd packages/newton; pub get)
 (cd packages/flutter_tools; pub get)
+(cd packages/flx; pub get)
+(cd packages/newton; pub get)
 (cd packages/unit; pub get)
 
 ./travis/download_tester.py packages/unit/packages/sky_engine/REVISION bin/cache/travis/out/Debug

travis/test.sh

diff --git a/travis/test.sh b/travis/test.sh
index 9684171..de9a355 100755
--- a/travis/test.sh
+++ b/travis/test.sh
@@ -2,6 +2,8 @@
 set -ex
 
 (cd packages/cassowary; pub global run tuneup check; pub run test -j1)
-(cd packages/newton; pub global run tuneup check; pub run test -j1)
 (cd packages/flutter_tools; pub global run tuneup check; pub run test -j1)
+(cd packages/flx; pub global run tuneup check; pub run test -j1)
+(cd packages/newton; pub global run tuneup check; pub run test -j1)
+
 ./dev/run_tests --engine-dir bin/cache/travis