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

mojo/public/dart/third_party/test/lib/src/runner/vm/environment.dart

Index: mojo/public/dart/third_party/test/lib/src/runner/vm/environment.dart
diff --git a/mojo/public/dart/third_party/test/lib/src/runner/vm/environment.dart b/mojo/public/dart/third_party/test/lib/src/runner/vm/environment.dart
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index 0000000000000000000000000000000000000000..b7480ea9eb75a2e1636214f42fd1bc85ebdc9651
--- /dev/null
+++ b/mojo/public/dart/third_party/test/lib/src/runner/vm/environment.dart
@@ -0,0 +1,23 @@
+// 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.vm.environment;
+
+import '../environment.dart';
+import '../../util/cancelable_future.dart';
+
+/// The environment for test suites loaded in an isolate in this Dart VM.
+class VMEnvironment implements Environment {
+  const VMEnvironment();
+
+  Uri get observatoryUrl => throw new UnsupportedError(
+      "VMEnvironment.observatoryUrl is not currently supported.");
+
+  Uri get remoteDebuggerUrl => throw new UnsupportedError(
+      "VMEnvironment.observatoryUrl is not supported.");
+
+  CancelableFuture displayPause() =>
+      throw new UnsupportedError(
+          "The VM doesn't yet support Environment.displayPause.");
+}