cc : Use effect node data to determine which opacity wins at commit.

cc/layers/layer_impl.h

 // Copyright 2011 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_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 536 matching lines @@
                              float width) const;
 
   gfx::Rect GetScaledEnclosingRectInTargetSpace(float scale) const;
 
  private:
   // Warning: This does not preserve tree structure invariants.
   void ClearChildList();
 
   void ValidateQuadResourcesInternal(DrawQuad* quad) const;
 
-  void NoteLayerPropertyChangedForDescendantsInternal();
-  void PushLayerPropertyChangedForSubtreeInternal();
-

[jaydasika, 2016/05/10 23:38:45]

Clean up unrelated to this CL

   virtual const char* LayerTypeAsString() const;
 
   // Properties internal to LayerImpl
   LayerImpl* parent_;
   LayerImplList children_;
 
   // mask_layer_ can be temporarily stolen during tree sync, we need this ID to
   // confirm newly assigned layer is still the previous one
   int mask_layer_id_;
   LayerImpl* mask_layer_;
@@ skipping 93 matching lines @@
   bool scrolls_drawn_descendant_;
   // If true, the layer or one of its descendants has a touch handler.
   bool layer_or_descendant_has_touch_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_