Fork cc::OutputSurface into cc::CompositorFrameSink.

cc/trees/channel_impl.h

 // Copyright 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 CC_TREES_CHANNEL_IMPL_H_
 #define CC_TREES_CHANNEL_IMPL_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/trees/proxy_common.h"
 
 namespace cc {
 
 class AnimationEvents;
 
 // Channel used to send commands to and receive commands from ProxyMain.
 // The ChannelImpl implementation creates and owns ProxyImpl on receiving the
 // InitializeImpl call from ChannelMain.
 // See channel_main.h
 class CC_EXPORT ChannelImpl {
  public:
   // Interface for commands sent to ProxyMain
   virtual void DidCompleteSwapBuffers() = 0;
   virtual void BeginMainFrameNotExpectedSoon() = 0;
   virtual void DidCommitAndDrawFrame() = 0;
   virtual void SetAnimationEvents(std::unique_ptr<AnimationEvents> queue) = 0;
-  virtual void DidLoseOutputSurface() = 0;
-  virtual void RequestNewOutputSurface() = 0;
-  virtual void DidInitializeOutputSurface(bool success) = 0;
+  virtual void DidLoseCompositorFrameSink() = 0;
+  virtual void RequestNewCompositorFrameSink() = 0;
+  virtual void DidInitializeCompositorFrameSink(bool success) = 0;
   virtual void DidCompletePageScaleAnimation() = 0;
   virtual void BeginMainFrame(
       std::unique_ptr<BeginMainFrameAndCommitState> begin_main_frame_state) = 0;
 
  protected:
   virtual ~ChannelImpl() {}
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_CHANNEL_IMPL_H_