cc: Partial tile update for one-copy raster.

cc/raster/bitmap_tile_task_worker_pool.cc

Index: cc/raster/bitmap_tile_task_worker_pool.cc
diff --git a/cc/raster/bitmap_tile_task_worker_pool.cc b/cc/raster/bitmap_tile_task_worker_pool.cc
index 1792a2053da7b5acde4e679a2e695046d1691820..54ffa32975784cac17fdce017aea55accab09369 100644
--- a/cc/raster/bitmap_tile_task_worker_pool.cc
+++ b/cc/raster/bitmap_tile_task_worker_pool.cc
@@ -29,7 +29,7 @@ class RasterBufferImpl : public RasterBuffer {
                 float scale) override {
     TileTaskWorkerPool::PlaybackToMemory(lock_.sk_bitmap().getPixels(),
                                          resource_->format(), resource_->size(),
-                                         0, raster_source, rect, scale);
+                                         0, raster_source, rect, rect, scale);
   }
 
  private:
@@ -166,9 +166,9 @@ ResourceFormat BitmapTileTaskWorkerPool::GetResourceFormat() {
 }
 
 scoped_ptr<RasterBuffer> BitmapTileTaskWorkerPool::AcquireBufferForRaster(
-    const Resource* resource) {
+    const TileTaskData& data) {
   return make_scoped_ptr<RasterBuffer>(
-      new RasterBufferImpl(resource_provider_, resource));
+      new RasterBufferImpl(resource_provider_, data.resource));
 }
 
 void BitmapTileTaskWorkerPool::ReleaseBufferForRaster(