WebLayerTreeView and WebWidget API cleanup

public/platform/WebLayerTreeView.h

 /*
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 80 matching lines @@
     // If useAnchor is true, destination is a point on the screen that will remain fixed for the duration of the animation.
     // If useAnchor is false, destination is the final top-left scroll position.
     virtual void startPageScaleAnimation(const WebPoint& destination, bool useAnchor, float newPageScale, double durationSec) = 0;
 
 
     // Flow control and scheduling ---------------------------------------
 
     // Indicates that an animation needs to be updated.
     virtual void setNeedsAnimate() = 0;
 
-    // Indicates that the view needs to be redrawn. This is typically used when the frontbuffer is damaged.
-    virtual void setNeedsRedraw() = 0;
-
     // Indicates whether a commit is pending.
     virtual bool commitRequested() const = 0;
 
     // Relays the end of a fling animation.
     virtual void didStopFlinging() { }
 
     // Composites and attempts to read back the result into the provided
     // buffer. If it wasn't possible, e.g. due to context lost, will return
     // false. Pixel format is 32bit (RGBA), and the provided buffer must be
     // large enough contain viewportSize().width() * viewportSize().height()
@@ skipping 33 matching lines @@
     // Toggles continuous painting
     virtual void setContinuousPaintingEnabled(bool) { }
 
     // Toggles scroll bottleneck rects on the HUD layer
     virtual void setShowScrollBottleneckRects(bool) { }
 };
 
 } // namespace blink
 
 #endif // WebLayerTreeView_h