cc: Move background filters to the effect tree

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 178 matching lines @@
   void SetSafeOpaqueBackgroundColor(SkColor background_color);
   // If contents_opaque(), return an opaque color else return a
   // non-opaque color.  Tries to return background_color(), if possible.
   SkColor SafeOpaqueBackgroundColor() const;
 
   void SetFilters(const FilterOperations& filters);
   const FilterOperations& filters() const { return filters_; }
   bool FilterIsAnimating() const;
   bool HasPotentiallyRunningFilterAnimation() const;
 
-  void SetBackgroundFilters(const FilterOperations& filters);
-  const FilterOperations& background_filters() const {
-    return background_filters_;
-  }
-
   void SetMasksToBounds(bool masks_to_bounds);
   bool masks_to_bounds() const { return masks_to_bounds_; }
 
   void SetContentsOpaque(bool opaque);
   bool contents_opaque() const { return contents_opaque_; }
 
   float Opacity() const;
   bool OpacityIsAnimating() const;
   bool HasPotentiallyRunningOpacityAnimation() const;
 
@@ skipping 343 matching lines @@
   gfx::PointF position_;
   gfx::Transform transform_;
 
   gfx::Rect clip_rect_in_target_space_;
   int transform_tree_index_;
   int effect_tree_index_;
   int clip_tree_index_;
   int scroll_tree_index_;
 
   FilterOperations filters_;
-  FilterOperations background_filters_;
 
  protected:
   friend class TreeSynchronizer;
 
   // Layers that share a sorting context id will be sorted together in 3d
   // space.  0 is a special value that means this layer will not be sorted and
   // will be drawn in paint order.
   int sorting_context_id_;
 
   DrawMode current_draw_mode_;
@@ skipping 23 matching lines @@
   bool scrolls_drawn_descendant_ : 1;
   bool has_will_change_transform_hint_ : 1;
   bool needs_push_properties_ : 1;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_