cc: Move background filters to the effect tree

cc/trees/damage_tracker.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_TREES_DAMAGE_TRACKER_H_
 #define CC_TREES_DAMAGE_TRACKER_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 42 matching lines @@
   gfx::Rect TrackDamageFromActiveLayers(
       const LayerImplList& layer_list,
       const RenderSurfaceImpl* target_surface);
   gfx::Rect TrackDamageFromSurfaceMask(LayerImpl* target_surface_mask_layer);
   gfx::Rect TrackDamageFromLeftoverRects();
 
   void PrepareRectHistoryForUpdate();
 
   // These helper functions are used only in TrackDamageFromActiveLayers().
   void ExtendDamageForLayer(LayerImpl* layer, gfx::Rect* target_damage_rect);
-  void ExtendDamageForRenderSurface(LayerImpl* layer,
+  void ExtendDamageForRenderSurface(RenderSurfaceImpl* render_surface,
                                     gfx::Rect* target_damage_rect);
 
   struct LayerRectMapData {
     LayerRectMapData() : layer_id_(0), mailboxId_(0) {}
     explicit LayerRectMapData(int layer_id)
         : layer_id_(layer_id), mailboxId_(0) {}
     void Update(const gfx::Rect& rect, unsigned int mailboxId) {
       mailboxId_ = mailboxId;
       rect_ = rect;
     }
@@ skipping 35 matching lines @@
 
   unsigned int mailboxId_;
   gfx::Rect current_damage_rect_;
 
   DISALLOW_COPY_AND_ASSIGN(DamageTracker);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_DAMAGE_TRACKER_H_