cc: Do bitmap conversion for RasterBuffer in the worker thread.

cc/resources/raster_worker_pool_unittest.cc

Index: cc/resources/raster_worker_pool_unittest.cc
diff --git a/cc/resources/raster_worker_pool_unittest.cc b/cc/resources/raster_worker_pool_unittest.cc
index 3b43c099b97074ce17065cbdbf8e0407bbd2fde4..f98279522ff95f0c5b517b56563ac0ae8543fcd7 100644
--- a/cc/resources/raster_worker_pool_unittest.cc
+++ b/cc/resources/raster_worker_pool_unittest.cc
@@ -49,10 +49,10 @@ class TestRasterTaskImpl : public RasterTask {
 
   // Overridden from RasterizerTask:
   virtual void ScheduleOnOriginThread(RasterizerTaskClient* client) OVERRIDE {
-    client->AcquireCanvasForRaster(this);
+    client->AcquireBufferForRaster(this);
   }
   virtual void CompleteOnOriginThread(RasterizerTaskClient* client) OVERRIDE {
-    client->ReleaseCanvasForRaster(this);
+    client->ReleaseBufferForRaster(this);
   }
   virtual void RunReplyOnOriginThread() OVERRIDE {
     reply_.Run(PicturePileImpl::Analysis(), !HasFinishedRunning());