(NOT FOR COMMIT) Testing layer invalidation speedups.

third_party/WebKit/public/platform/WebLayer.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 43 matching lines @@
 
 class WebLayer {
 public:
     virtual ~WebLayer() { }
 
     // Returns a positive ID that will be unique across all WebLayers allocated in this process.
     virtual int id() const = 0;
 
     // Sets a region of the layer as invalid, i.e. needs to update its content.
     virtual void invalidateRect(const WebRect&) = 0;
+    virtual void invalidateRects(const std::vector<blink::WebRect>&) = 0;
 
     // Sets the entire layer as invalid, i.e. needs to update its content.
     virtual void invalidate() = 0;
 
     // These functions do not take ownership of the WebLayer* parameter.
     virtual void addChild(WebLayer*) = 0;
     virtual void insertChild(WebLayer*, size_t index) = 0;
     virtual void replaceChild(WebLayer* reference, WebLayer* newLayer) = 0;
     virtual void removeFromParent() = 0;
     virtual void removeAllChildren() = 0;
@@ skipping 128 matching lines @@
 
     virtual void setCompositorMutableProperties(uint32_t) = 0;
     virtual uint32_t compositorMutableProperties() const = 0;
 
     virtual void setHasWillChangeTransformHint(bool) = 0;
 };
 
 } // namespace blink
 
 #endif // WebLayer_h