cc: Partial tile update for one-copy raster.

cc/playback/picture_pile_impl.h

 // Copyright 2012 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_PLAYBACK_PICTURE_PILE_IMPL_H_
 #define CC_PLAYBACK_PICTURE_PILE_IMPL_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 21 matching lines @@
  public:
   static scoped_refptr<PicturePileImpl> CreateFromPicturePile(
       const PicturePile* other,
       bool can_use_lcd_text);
 
   // RasterSource overrides. See RasterSource header for full description.
   // When slow-down-raster-scale-factor is set to a value greater than 1, the
   // reported rasterize time (in stats_instrumentation) is the minimum measured
   // value over all runs.
   void PlaybackToCanvas(SkCanvas* canvas,
-                        const gfx::Rect& canvas_rect,
+                        const gfx::Rect& canvas_bitmap_rect,
+                        const gfx::Rect& canvas_playback_rect,

[reveman, 2015/05/22 17:15:13]

nit: is the canvas always backed by a bitmap? maybe canvas_rect and
playback_rect if not

[danakj, 2015/05/26 19:02:52]

It is. For gpu raster the bitmap is backed by a texture, but it's always an
SkBitmap (ie we're rastering here not recording).

[reveman, 2015/05/26 20:12:37]

Ok, makes sense then.

                         float contents_scale) 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;
   void GatherPixelRefs(const gfx::Rect& content_rect,
                        float contents_scale,
@@ skipping 97 matching lines @@
   bool CanRasterSlowTileCheck(const gfx::Rect& layer_rect) const;
 
   gfx::Rect PaddedRect(const PictureMapKey& key) const;
 
   DISALLOW_COPY_AND_ASSIGN(PicturePileImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_PLAYBACK_PICTURE_PILE_IMPL_H_