cc: Remove all traces of SkPicture cloning.

cc/resources/picture_pile_base.h

 // Copyright 2013 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_RESOURCES_PICTURE_PILE_BASE_H_
 #define CC_RESOURCES_PICTURE_PILE_BASE_H_
 
 #include <bitset>
 #include <list>
 #include <utility>
@@ skipping 12 matching lines @@
 }
 class Value;
 }
 
 namespace cc {
 
 class CC_EXPORT PicturePileBase : public base::RefCounted<PicturePileBase> {
  public:
   PicturePileBase();
   explicit PicturePileBase(const PicturePileBase* other);
-  PicturePileBase(const PicturePileBase* other, unsigned thread_index);
 
   gfx::Size tiling_size() const { return tiling_.tiling_size(); }
   void SetMinContentsScale(float min_contents_scale);
 
   // If non-empty, all pictures tiles inside this rect are recorded. There may
   // be recordings outside this rect, but everything inside the rect is
   // recorded.
   gfx::Rect recorded_viewport() const { return recorded_viewport_; }
 
   int num_tiles_x() const { return tiling_.num_tiles_x(); }
@@ skipping 21 matching lines @@
    public:
     enum {
       INVALIDATION_FRAMES_TRACKED = 32
     };
 
     PictureInfo();
     ~PictureInfo();
 
     bool Invalidate(int frame_number);
     bool NeedsRecording(int frame_number, int distance_to_visible);
-    PictureInfo CloneForThread(int thread_index) const;
     void SetPicture(scoped_refptr<Picture> picture);
-    Picture* GetPicture() const;
+    const Picture* GetPicture() const;
 
     float GetInvalidationFrequencyForTesting() const {
       return GetInvalidationFrequency();
     }
 
    private:
     void AdvanceInvalidationHistory(int frame_number);
     float GetInvalidationFrequency() const;
 
     int last_frame_number_;
-    scoped_refptr<Picture> picture_;
+    scoped_refptr<const Picture> picture_;
     std::bitset<INVALIDATION_FRAMES_TRACKED> invalidation_history_;
   };
 
   typedef std::pair<int, int> PictureMapKey;
   typedef base::hash_map<PictureMapKey, PictureInfo> PictureMap;
 
   virtual ~PicturePileBase();
 
   int buffer_pixels() const { return tiling_.border_texels(); }
   void Clear();
 
-  gfx::Rect PaddedRect(const PictureMapKey& key);
-  gfx::Rect PadRect(const gfx::Rect& rect);
+  gfx::Rect PaddedRect(const PictureMapKey& key) const;
+  gfx::Rect PadRect(const gfx::Rect& rect) const;
 
   // An internal CanRaster check that goes to the picture_map rather than
   // using the recorded_viewport hint.
   bool CanRasterSlowTileCheck(const gfx::Rect& layer_rect) const;
 
   // A picture pile is a tiled set of pictures. The picture map is a map of tile
   // indices to picture infos.
   PictureMap picture_map_;
   TilingData tiling_;
   gfx::Rect recorded_viewport_;
@@ skipping 13 matching lines @@
  private:
   void SetBufferPixels(int buffer_pixels);
 
   friend class base::RefCounted<PicturePileBase>;
   DISALLOW_COPY_AND_ASSIGN(PicturePileBase);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PICTURE_PILE_BASE_H_