Add switch to use ipc command buffer in Android WebView

content/renderer/android/synchronous_compositor_factory.h

 // Copyright 2013 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_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_FACTORY_H_
 #define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_FACTORY_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "gpu/config/gpu_info.h"
@@ skipping 39 matching lines @@
   virtual bool RecordFullLayer() = 0;
   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface(
       int routing_id,
       scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue) = 0;
 
   // The factory maintains ownership of the returned interface.
   virtual InputHandlerManagerClient* GetInputHandlerManagerClient() = 0;
 
   virtual scoped_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource(
       int routing_id) = 0;
+  virtual scoped_refptr<StreamTextureFactory> CreateStreamTextureFactory(
+      int frame_id) = 0;
 
+  // Methods below should not be called if OverrideWithFactory is false.
+  // Instead, just fallback to default implementation, as if factory
+  // does not exist.
+  virtual bool OverrideWithFactory();
   virtual scoped_refptr<cc_blink::ContextProviderWebContext>
   CreateOffscreenContextProvider(
       const blink::WebGraphicsContext3D::Attributes& attributes,
       const std::string& debug_name) = 0;
-  virtual scoped_refptr<StreamTextureFactory> CreateStreamTextureFactory(
-      int frame_id) = 0;
   virtual gpu_blink::WebGraphicsContext3DInProcessCommandBufferImpl*
       CreateOffscreenGraphicsContext3D(
           const blink::WebGraphicsContext3D::Attributes& attributes) = 0;
   virtual gpu::GPUInfo GetGPUInfo() const = 0;
 
  protected:
   SynchronousCompositorFactory() {}
   virtual ~SynchronousCompositorFactory() {}
 };
 
 }
 
 #endif  // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_FACTORY_H_