cc: Partial tile update for one-copy raster.

cc/resources/display_list_raster_source.h

 // Copyright 2014 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_DISPLAY_LIST_RASTER_SOURCE_H_
 #define CC_RESOURCES_DISPLAY_LIST_RASTER_SOURCE_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 10 matching lines @@
 
 class CC_EXPORT DisplayListRasterSource : public RasterSource {
  public:
   static scoped_refptr<DisplayListRasterSource>
   CreateFromDisplayListRecordingSource(const DisplayListRecordingSource* other,
                                        bool can_use_lcd_text);
 
   // RasterSource overrides.
   void PlaybackToCanvas(SkCanvas* canvas,
                         const gfx::Rect& canvas_rect,
-                        float contents_scale) const override;
+                        float contents_scale,
+                        bool partial_update) const override;
   void PlaybackToSharedCanvas(SkCanvas* canvas,
                               const gfx::Rect& canvas_rect,
                               float contents_scale) const override;
   void PerformSolidColorAnalysis(
       const gfx::Rect& content_rect,
       float contents_scale,
       RasterSource::SolidColorAnalysis* analysis) const override;
   bool IsSolidColor() const override;
   SkColor GetSolidColor() const override;
   gfx::Size GetSize() const override;
@@ skipping 47 matching lines @@
                     SkDrawPictureCallback* callback,
                     const gfx::Rect& canvas_rect,
                     float contents_scale) const;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayListRasterSource);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_DISPLAY_LIST_RASTER_SOURCE_H_