cc: Partial tile update for one-copy raster.

cc/raster/gpu_rasterizer.cc

 // Copyright 2015 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.
 
 #include "cc/raster/gpu_rasterizer.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
@@ skipping 32 matching lines @@
     const RasterSource* raster_source,
     const gfx::Rect& rect,
     float scale) {
   // Play back raster_source into temp SkPicture.
   SkPictureRecorder recorder;
   gfx::Size size = write_lock->resource()->size;
   const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
   skia::RefPtr<SkCanvas> canvas = skia::SharePtr(
       recorder.beginRecording(size.width(), size.height(), NULL, flags));
   canvas->save();
-  raster_source->PlaybackToCanvas(canvas.get(), rect, scale);
+  raster_source->PlaybackToCanvas(canvas.get(), rect, rect, scale);
   canvas->restore();
   skia::RefPtr<SkPicture> picture =
       skia::AdoptRef(recorder.endRecordingAsPicture());
 
   // Turn on distance fields for layers that have ever animated.
   bool use_distance_field_text =
       use_distance_field_text_ ||
       raster_source->ShouldAttemptToUseDistanceFieldText();
 
   // Playback picture into resource.
@@ skipping 12 matching lines @@
       return;
 
     SkMultiPictureDraw multi_picture_draw;
     multi_picture_draw.add(sk_surface->getCanvas(), picture.get());
     multi_picture_draw.draw(msaa_sample_count_ > 0);
     write_lock->ReleaseSkSurface();
   }
 }
 
 }  // namespace cc