cc: Partial tile update for one-copy raster.

cc/resources/raster_source_helper.h

Index: cc/resources/raster_source_helper.h
diff --git a/cc/resources/raster_source_helper.h b/cc/resources/raster_source_helper.h
index abdea3efa6100b8c59f2ab355489595b342b6b4f..35de546b24f4841f0b4b7174015ac307f49dda9e 100644
--- a/cc/resources/raster_source_helper.h
+++ b/cc/resources/raster_source_helper.h
@@ -16,12 +16,13 @@ namespace cc {
 class CC_EXPORT RasterSourceHelper {
  public:
   static void PrepareForPlaybackToCanvas(SkCanvas* canvas,
-                                         const gfx::Rect& canvas_rect,
+                                         const gfx::Rect& canvas_bitmap_rect,
+                                         const gfx::Rect& canvas_playback_rect,
                                          const gfx::Rect& source_rect,
                                          float contents_scale,
                                          SkColor background_color,
                                          bool clear_canvas_with_debug_color,
-                                         bool requires_clear);
+                                         bool requires_clearxB);
 };
 
 }  // namespace cc