Fixes aura build on windows. Makes all tests use the test compositor

ui/aura/aura_test_base.h

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_AURA_TEST_BASE_H_
+#define UI_AURA_TEST_BASE_H_
+#pragma once
+
+#include "base/compiler_specific.h"
+#include "base/basictypes.h"
+#include "base/message_loop.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace aura {
+
+// A base class for aura unit tests.
+class AuraTestBase : public testing::Test {
+ public:
+  AuraTestBase();
+  virtual ~AuraTestBase();
+
+  void RunPendingMessages() {
+    message_loop_.RunAllPending();
+  }
+
+  // testing::Test:
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+
+ private:
+  MessageLoopForUI message_loop_;
+  bool setup_called_;
+  bool teardown_called_;
+
+  DISALLOW_COPY_AND_ASSIGN(AuraTestBase);
+};
+
+}  // namespace aura
+
+#endif  // UI_AURA_TEST_BASE_H_