cc: Change gtest includes to the style used in chromium.

cc/CCThreadedTest.h

 // Copyright 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 CCThreadedTest_h
 #define CCThreadedTest_h
 
 #include "CCLayerTreeHost.h"
 #include "CCLayerTreeHostImpl.h"
 #include "CCScopedThreadProxy.h"
 #include "CompositorFakeWebGraphicsContext3D.h"
-#include <gtest/gtest.h>
+#include "testing/gtest/include/gtest/gtest.h"
 #include <public/WebAnimationDelegate.h>
 #include <public/WebThread.h>
 
 namespace cc {
 class CCLayerImpl;
 class CCLayerTreeHost;
 class CCLayerTreeHostClient;
 class CCLayerTreeHostImpl;
 class GraphicsContext3D;
 }
@@ skipping 175 matching lines @@
     TEST_F(TEST_FIXTURE_NAME, runSingleThread)            \
     {                                                     \
         runTest(false);                                   \
     }                                                     \
     TEST_F(TEST_FIXTURE_NAME, runMultiThread)             \
     {                                                     \
         runTest(true);                                    \
     }
 
 #endif // CCThreadedTest_h