Add support for converting cc::FilterOperations into an SkImageFilter

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 <set>
 #include <string>
 
@@ skipping 175 matching lines @@
   SkColor SafeOpaqueBackgroundColor() const;
 
   void SetFilters(const FilterOperations& filters);
   const FilterOperations& filters() const { return filters_; }
 
   void SetBackgroundFilters(const FilterOperations& filters);
   const FilterOperations& background_filters() const {
     return background_filters_;
   }
 
-  void SetFilter(const skia::RefPtr<SkImageFilter>& filter);
-  skia::RefPtr<SkImageFilter> filter() const { return filter_; }
-
   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_; }
 
   void SetOpacity(float opacity);
   float opacity() const { return opacity_; }
   bool OpacityIsAnimating() const;
   bool OpacityIsAnimatingOnImplOnly() const;
@@ skipping 381 matching lines @@
   // The global depth value of the center of the layer. This value is used
   // to sort layers from back to front.
   float draw_depth_;
 
   // Debug layer name.
   std::string debug_name_;
   CompositingReasons compositing_reasons_;
 
   FilterOperations filters_;
   FilterOperations background_filters_;
-  skia::RefPtr<SkImageFilter> filter_;
 
  protected:
   DrawMode current_draw_mode_;
 
  private:
   // Rect indicating what was repainted/updated during update.
   // Note that plugin layers bypass this and leave it empty.
   // Uses layer's content space.
   gfx::RectF update_rect_;
 
@@ skipping 13 matching lines @@
   // Group of properties that need to be computed based on the layer tree
   // hierarchy before layers can be drawn.
   DrawProperties<LayerImpl, RenderSurfaceImpl> draw_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_