cc: Partial tile update for one-copy raster.

cc/resources/pixel_buffer_tile_task_worker_pool.cc

Index: cc/resources/pixel_buffer_tile_task_worker_pool.cc
diff --git a/cc/resources/pixel_buffer_tile_task_worker_pool.cc b/cc/resources/pixel_buffer_tile_task_worker_pool.cc
index f74e066e1a33e058c510199580ad5979dde9abdc..1b519f788bea11088465c21dea38f0f873c4d718 100644
--- a/cc/resources/pixel_buffer_tile_task_worker_pool.cc
+++ b/cc/resources/pixel_buffer_tile_task_worker_pool.cc
@@ -43,7 +43,7 @@ class RasterBufferImpl : public RasterBuffer {
 
     TileTaskWorkerPool::PlaybackToMemory(memory_, resource_->format(),
                                          resource_->size(), stride_,
-                                         raster_source, rect, scale);
+                                         raster_source, rect, rect, scale);
   }
 
  private:
@@ -312,9 +312,9 @@ ResourceFormat PixelBufferTileTaskWorkerPool::GetResourceFormat() {
 }
 
 scoped_ptr<RasterBuffer> PixelBufferTileTaskWorkerPool::AcquireBufferForRaster(
-    const Resource* resource) {
+    const TileTaskData& data) {
   return make_scoped_ptr<RasterBuffer>(
-      new RasterBufferImpl(resource_provider_, resource));
+      new RasterBufferImpl(resource_provider_, data.resource));
 }
 
 void PixelBufferTileTaskWorkerPool::ReleaseBufferForRaster(