Move gpu memory calculations to Compositor.

content/browser/android/in_process/synchronous_compositor_context_provider.h

 // Copyright (c) 2015 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 CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_CONTEXT_PROVIDER_H_
 #define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_CONTEXT_PROVIDER_H_
 
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 
 namespace content {
 
 // This class exists purely to ignore memory signals from the command buffer.
 // Synchronous compositor manages memory by itself.
 class SynchronousCompositorContextProvider
     : public ContextProviderCommandBuffer {
  public:
   SynchronousCompositorContextProvider(
       scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
       CommandBufferContextType type);
 
-  void SetMemoryPolicyChangedCallback(
-      const MemoryPolicyChangedCallback& memory_policy_changed_callback)
-      override;
-
  private:
   ~SynchronousCompositorContextProvider() override;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_CONTEXT_PROVIDER_H_