cc: Remove "SwapBuffers" naming from LayerTreeHostSingleThreadClient

cc/trees/layer_tree_host_single_thread_client.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 CC_TREES_LAYER_TREE_HOST_SINGLE_THREAD_CLIENT_H_
 #define CC_TREES_LAYER_TREE_HOST_SINGLE_THREAD_CLIENT_H_
 
 namespace cc {
 
 class LayerTreeHostSingleThreadClient {
  public:
   // Request that the client schedule a composite.
   virtual void RequestScheduleComposite() {}
   // Request that the client schedule a composite now, and calculate appropriate
   // delay for potential future frame.
   virtual void RequestScheduleAnimation() {}
 
-  // Called whenever the compositor posts a SwapBuffers (either full or
-  // partial). After DidPostSwapBuffers(), exactly one of
-  // DidReceiveCompositorFrameAck() or DidAbortSwapBuffers() will be called,
-  // thus
-  // these functions can be used to keep track of pending swap buffers calls for
-  // rate limiting.
-  virtual void DidPostSwapBuffers() = 0;
-  virtual void DidReceiveCompositorFrameAck() = 0;
-  virtual void DidAbortSwapBuffers() = 0;
+  // Called whenever the compositor submits a CompositorFrame. Afterward,
+  // LayerTreeHostClient::DidReceiveCompositorFrameAck() will be called once the
+  // display compositor/ finishes processing the frame. So these functions can
+  // be used to keep track of pending submitted CompositorFrames for rate
+  // limiting.
+  virtual void DidSubmitCompositorFrame() = 0;
+
+  // Called when the active CompositorFrameSink is lost and needs to be
+  // replaced. This allows the embedder to schedule a composite which will
+  // run the machinery to acquire a new CompositorFrameSink.
+  virtual void DidLoseCompositorFrameSink() = 0;
 
  protected:
   virtual ~LayerTreeHostSingleThreadClient() {}
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_SINGLE_THREAD_CLIENT_H_