blink: Cleanup class forward declarations

third_party/WebKit/Source/platform/testing/TestingPlatformSupport.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 40 matching lines @@
 namespace cc_blink {
 class WebCompositorSupportImpl;
 }  // namespace cc_blink
 
 namespace blink {
 namespace scheduler {
 class RendererScheduler;
 class RendererSchedulerImpl;
 }
 class TestingPlatformMockWebTaskRunner;
-class TestingPlatformMockWebThread;
 class WebCompositorSupport;
 class WebThread;
 
 class TestingCompositorSupport : public WebCompositorSupport {
   std::unique_ptr<WebLayer> createLayer() override;
   std::unique_ptr<WebLayer> createLayerFromCCLayer(cc::Layer*) override;
   std::unique_ptr<WebContentLayer> createContentLayer(
       WebContentLayerClient*) override;
   std::unique_ptr<WebExternalTextureLayer> createExternalTextureLayer(
       cc::TextureLayerClient*) override;
@@ skipping 135 matching lines @@
       m_discardableMemoryAllocator;
   std::unique_ptr<DummyPlatform> m_platform;
   std::unique_ptr<cc_blink::WebCompositorSupportImpl> m_compositorSupport;
   TestingPlatformSupport::Config m_testingPlatformConfig;
   std::unique_ptr<TestingPlatformSupport> m_testingPlatformSupport;
 };
 
 }  // namespace blink
 
 #endif  // TestingPlatformSupport_h