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

mojo/public/dart/third_party/test/lib/src/runner/load_exception_suite.dart

Index: mojo/public/dart/third_party/test/lib/src/runner/load_exception_suite.dart
diff --git a/mojo/public/dart/third_party/test/lib/src/runner/load_exception_suite.dart b/mojo/public/dart/third_party/test/lib/src/runner/load_exception_suite.dart
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+// Copyright (c) 2015, 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.
+
+library test.runner.load_exception_suite;
+
+import 'dart:async';
+
+import '../backend/invoker.dart';
+import '../backend/metadata.dart';
+import '../backend/suite.dart';
+import 'load_exception.dart';
+
+/// A test suite generated from a load exception.
+///
+/// Load exceptions are exposed as test suites so that they can be presented
+/// alongside successful tests.
+class LoadExceptionSuite extends Suite {
+  /// The exception that this suite exposes.
+  final LoadException exception;
+  final StackTrace stackTrace;
+
+  LoadExceptionSuite(LoadException exception, stackTrace)
+      : exception = exception,
+        stackTrace = stackTrace,
+        super([
+          new LocalTest("load error", new Metadata(),
+              () => new Future.error(exception, stackTrace))
+        ], path: exception.path);
+}