Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/unittest/lib/html_individual_config.dart

Index: mojo/public/dart/third_party/unittest/lib/html_individual_config.dart
diff --git a/mojo/public/dart/third_party/unittest/lib/html_individual_config.dart b/mojo/public/dart/third_party/unittest/lib/html_individual_config.dart
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+// Copyright (c) 2013, the Dart 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.
+
+/// A unit test library for running groups of tests in a browser, instead of the
+/// entire test file. This is especially used for large tests files that have
+/// many subtests, so we can mark groups as failing at a finer granularity than
+/// the entire test file.
+///
+/// To use, import this file, and call [useHtmlIndividualConfiguration] at the
+/// start of your set sequence. Important constraint: your group descriptions
+/// MUST NOT contain spaces.
+library unittest.html_individual_config;
+
+import 'dart:html';
+import 'unittest.dart' as unittest;
+import 'html_config.dart' as htmlconfig;
+
+class HtmlIndividualConfiguration extends htmlconfig.HtmlConfiguration {
+  HtmlIndividualConfiguration(bool isLayoutTest) : super(isLayoutTest);
+
+  void onStart() {
+    var uri = Uri.parse(window.location.href);
+
+    var groups = 'group='.allMatches(uri.query).toList();
+
+    if (groups.length > 1) {
+      throw new ArgumentError('More than one "group" parameter provided.');
+    }
+
+    var testGroupName = uri.queryParameters['group'];
+
+    if (testGroupName != null) {
+      var startsWith = "$testGroupName${unittest.groupSep}";
+      unittest.filterTests(
+          (unittest.TestCase tc) => tc.description.startsWith(startsWith));
+    }
+    super.onStart();
+  }
+}
+
+void useHtmlIndividualConfiguration([bool isLayoutTest = false]) {
+  unittest.unittestConfiguration =
+      isLayoutTest ? _singletonLayout : _singletonNotLayout;
+}
+
+final _singletonLayout = new HtmlIndividualConfiguration(true);
+final _singletonNotLayout = new HtmlIndividualConfiguration(false);