Remove unnecessary WebWidgetClient compositor methods

public/web/WebWidgetClient.h

 /*
  * Copyright (C) 2009 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 56 matching lines @@
     virtual WebLayerTreeView* layerTreeView() { return 0; }
     // FIXME: Remove all overrides of this and change layerTreeView() above to ASSERT_NOT_REACHED.
     virtual bool allowsBrokenNullLayerTreeView() const { return false; }
 
     // Sometimes the WebWidget enters a state where it will generate a sequence
     // of invalidations that should not, by themselves, trigger the compositor
     // to schedule a new frame. This call indicates to the embedder that it
     // should suppress compositor scheduling temporarily.
     virtual void suppressCompositorScheduling(bool enable) { }
 
-    // Indicates to the embedder that the compositor is about to begin a
-    // frame. This is primarily to signal to flow control mechanisms that a
-    // frame is beginning, not to perform actual painting work.
-    virtual void willBeginCompositorFrame() { }
-
-    // Indicates to the embedder that the WebWidget is ready for additional
-    // input.
-    virtual void didBecomeReadyForAdditionalInput() { }
-
-    // Called for compositing mode when a frame commit operation has finished.
-    virtual void didCommitCompositorFrame() { }
-
-    // Called for compositing mode when the draw commands for a WebKit-side
-    // frame have been issued.
-    virtual void didCommitAndDrawCompositorFrame() { }
-
-    // Called for compositing mode when swapbuffers has been posted in the GPU
-    // process.
-    virtual void didCompleteSwapBuffers() { }
-
     // Called when a call to WebWidget::animate is required
     virtual void scheduleAnimation() { }
 
     // Called when the widget acquires or loses focus, respectively.
     virtual void didFocus() { }
     virtual void didBlur() { }
 
     // Called when the cursor for the widget changes.
     virtual void didChangeCursor(const WebCursorInfo&) { }
 
@@ skipping 78 matching lines @@
     // something as a result of a tap without explicitly consuming the event.
     virtual void showUnhandledTapUIIfNeeded(const WebPoint& tappedPosition,
         const WebNode& tappedNode, bool pageChanged) { }
 protected:
     ~WebWidgetClient() { }
 };
 
 } // namespace blink
 
 #endif