cc: Partial tile update for one-copy raster.

cc/raster/raster_buffer.h

Index: cc/raster/raster_buffer.h
diff --git a/cc/raster/raster_buffer.h b/cc/raster/raster_buffer.h
index 8f3a56200f668b565dc197f90b94a31d562e0c96..2b63806d552c1f01191bbf1b73bb154550087e3e 100644
--- a/cc/raster/raster_buffer.h
+++ b/cc/raster/raster_buffer.h
@@ -17,7 +17,8 @@ class CC_EXPORT RasterBuffer {
   virtual ~RasterBuffer();
 
   virtual void Playback(const RasterSource* raster_source,
-                        const gfx::Rect& rect,
+                        const gfx::Rect& raster_full_rect,
+                        const gfx::Rect& raster_dirty_rect,
                         float scale) = 0;
 };