cc: Partial tile update for one-copy raster.

cc/resources/picture_pile_impl.cc

Index: cc/resources/picture_pile_impl.cc
diff --git a/cc/resources/picture_pile_impl.cc b/cc/resources/picture_pile_impl.cc
index d1fba063af1dd62900ea0ee963e4a3e79be413ed..3ada211351a04d402cf9952d62e117215b551f32 100644
--- a/cc/resources/picture_pile_impl.cc
+++ b/cc/resources/picture_pile_impl.cc
@@ -91,10 +91,12 @@ void PicturePileImpl::RasterForAnalysis(skia::AnalysisCanvas* canvas,
 
 void PicturePileImpl::PlaybackToCanvas(SkCanvas* canvas,
                                        const gfx::Rect& canvas_rect,
-                                       float contents_scale) const {
+                                       float contents_scale,
+                                       bool partial_update) const {
   RasterSourceHelper::PrepareForPlaybackToCanvas(
       canvas, canvas_rect, gfx::Rect(tiling_.tiling_size()), contents_scale,
-      background_color_, clear_canvas_with_debug_color_, requires_clear_);
+      background_color_, clear_canvas_with_debug_color_, requires_clear_,
+      partial_update);
   RasterCommon(canvas, NULL, canvas_rect, contents_scale);
 }
 
@@ -256,7 +258,7 @@ skia::RefPtr<SkPicture> PicturePileImpl::GetFlattenedPicture() {
   SkCanvas* canvas =
       recorder.beginRecording(tiling_rect.width(), tiling_rect.height());
   if (!tiling_rect.IsEmpty())
-    PlaybackToCanvas(canvas, tiling_rect, 1.0);
+    PlaybackToCanvas(canvas, tiling_rect, 1.0, false /* partial_update */);
   skia::RefPtr<SkPicture> picture =
       skia::AdoptRef(recorder.endRecordingAsPicture());