(NOT FOR COMMIT) Testing layer invalidation speedups.

cc/blink/web_layer_impl.h

 // Copyright 2014 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_BLINK_WEB_LAYER_IMPL_H_
 #define CC_BLINK_WEB_LAYER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 42 matching lines @@
   CC_BLINK_EXPORT cc::Layer* layer() const;
 
   // If set to true, content opaqueness cannot be changed using setOpaque.
   // However, it can still be modified using SetContentsOpaque on the
   // cc::Layer.
   CC_BLINK_EXPORT void SetContentsOpaqueIsFixed(bool fixed);
 
   // WebLayer implementation.
   int id() const override;
   void invalidateRect(const blink::WebRect&) override;
+  void invalidateRects(const std::vector<blink::WebRect>&) override;
   void invalidate() override;
   void addChild(blink::WebLayer* child) override;
   void insertChild(blink::WebLayer* child, size_t index) override;
   void replaceChild(blink::WebLayer* reference,
                     blink::WebLayer* new_layer) override;
   void removeFromParent() override;
   void removeAllChildren() override;
   void setBounds(const blink::WebSize& bounds) override;
   blink::WebSize bounds() const override;
   void setMasksToBounds(bool masks_to_bounds) override;
@@ skipping 67 matching lines @@
 
   bool contents_opaque_is_fixed_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebLayerImpl);
 };
 
 }  // namespace cc_blink
 
 #endif  // CC_BLINK_WEB_LAYER_IMPL_H_