Throttle rendering pipeline for invisible frames

third_party/WebKit/public/web/WebWidget.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.
@@ skipping 92 matching lines @@
     // onto the specified canvas at (viewPort.x,viewPort.y). You MUST call
     // Layout before calling this method. It is okay to call paint
     // multiple times once layout has been called, assuming no other
     // changes are made to the WebWidget (e.g., once events are
     // processed, it should be assumed that another call to layout is
     // warranted before painting again).
     virtual void paint(WebCanvas*, const WebRect& viewPort) { }
 
     virtual void paintCompositedDeprecated(WebCanvas*, const WebRect&) { }
 
+    virtual void didCommitCompositorFrame() { }
+
     // Run layout and paint of all pending document changes asynchronously.
     // The caller is resposible for keeping the WebLayoutAndPaintAsyncCallback
     // object alive until it is called.
     virtual void layoutAndPaintAsync(WebLayoutAndPaintAsyncCallback*) { }
 
     // The caller is responsible for keeping the WebCompositeAndReadbackAsyncCallback
     // object alive until it is called. This should only be called when
     // isAcceleratedCompositingActive() is true.
     virtual void compositeAndReadbackAsync(WebCompositeAndReadbackAsyncCallback*) { }
 
@@ skipping 139 matching lines @@
     // control what are valid states for top controls and if it should animate.
     virtual void updateTopControlsState(WebTopControlsState constraints, WebTopControlsState current, bool animate) { }
 
 protected:
     ~WebWidget() { }
 };
 
 } // namespace blink
 
 #endif