Revert of Refactoring: Move some classes from content/child to platform

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 100 matching lines @@
     explicit TestingPlatformSupport(const Config&);
 
     ~TestingPlatformSupport() override;
 
     // Platform:
     WebDiscardableMemory* allocateAndLockDiscardableMemory(size_t bytes) override;
     WebString defaultLocale() override;
     WebCompositorSupport* compositorSupport() override;
     WebThread* currentThread() override;
     WebUnitTestSupport* unitTestSupport() override;
-    void registerMemoryDumpProvider(blink::WebMemoryDumpProvider*, const char* name) override {}
-    void unregisterMemoryDumpProvider(blink::WebMemoryDumpProvider*) override {}
     void connectToRemoteService(const char* name, mojo::ScopedMessagePipeHandle) override;
 
 protected:
     const Config m_config;
     Platform* const m_oldPlatform;
 };
 
 class TestingPlatformSupportWithMockScheduler : public TestingPlatformSupport {
     WTF_MAKE_NONCOPYABLE(TestingPlatformSupportWithMockScheduler);
 public:
     TestingPlatformSupportWithMockScheduler();
     explicit TestingPlatformSupportWithMockScheduler(const Config&);
     ~TestingPlatformSupportWithMockScheduler() override;
 
     // Platform:
     WebThread* currentThread() override;
     TestingPlatformMockScheduler* mockWebScheduler();
 
 protected:
     OwnPtr<TestingPlatformMockWebThread> m_mockWebThread;
 };
 
 } // namespace blink
 
 #endif // TestingPlatformSupport_h