Add skia::RefPtr class to wrap ref counted classes from Skia.

cc/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_LAYER_IMPL_H_
 #define CC_LAYER_IMPL_H_
 
 #include <public/WebFilterOperations.h>
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
 #include "cc/input_handler.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/region.h"
 #include "cc/render_pass.h"
 #include "cc/render_surface_impl.h"
 #include "cc/resource_provider.h"
 #include "cc/scoped_ptr_vector.h"
 #include "cc/shared_quad_state.h"
+#include "cc/skia_refptr.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "third_party/skia/include/core/SkImageFilter.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/rect_f.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 
 class LayerSorter;
 class LayerTreeHostImpl;
 class QuadSink;
 class Renderer;
@@ skipping 75 matching lines @@
 
     void setBackgroundColor(SkColor);
     SkColor backgroundColor() const { return m_backgroundColor; }
 
     void setFilters(const WebKit::WebFilterOperations&);
     const WebKit::WebFilterOperations& filters() const { return m_filters; }
 
     void setBackgroundFilters(const WebKit::WebFilterOperations&);
     const WebKit::WebFilterOperations& backgroundFilters() const { return m_backgroundFilters; }
 
-    void setFilter(SkImageFilter*);
-    SkImageFilter* filter() const { return m_filter; }
+    void setFilter(const SkiaRefPtr<SkImageFilter>&);
+    SkiaRefPtr<SkImageFilter> filter() const { return m_filter; }
 
     void setMasksToBounds(bool);
     bool masksToBounds() const { return m_masksToBounds; }
 
     void setContentsOpaque(bool);
     bool contentsOpaque() const { return m_contentsOpaque; }
 
     void setOpacity(float);
     bool opacityIsAnimating() const;
 
@@ skipping 255 matching lines @@
     // to sort layers from back to front.
     float m_drawDepth;
     float m_drawOpacity;
     bool m_drawOpacityIsAnimating;
 
     // Debug layer name.
     std::string m_debugName;
 
     WebKit::WebFilterOperations m_filters;
     WebKit::WebFilterOperations m_backgroundFilters;
-    SkImageFilter* m_filter;
+    SkiaRefPtr<SkImageFilter> m_filter;
 
     gfx::Transform m_drawTransform;
     gfx::Transform m_screenSpaceTransform;
     bool m_drawTransformIsAnimating;
     bool m_screenSpaceTransformIsAnimating;
 
 #ifndef NDEBUG
     bool m_betweenWillDrawAndDidDraw;
 #endif
 
@@ skipping 20 matching lines @@
     scoped_ptr<ScrollbarAnimationController> m_scrollbarAnimationController;
 
     DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 void sortLayers(std::vector<LayerImpl*>::iterator first, std::vector<LayerImpl*>::iterator end, LayerSorter*);
 
 }
 
 #endif  // CC_LAYER_IMPL_H_