Re-land: cc: Use worker context for one-copy tile initialization.

cc/test/layer_tree_pixel_resource_test.h

 // Copyright 2014 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.
 
 #ifndef CC_TEST_LAYER_TREE_PIXEL_RESOURCE_TEST_H_
 #define CC_TEST_LAYER_TREE_PIXEL_RESOURCE_TEST_H_
 
 #include "base/memory/ref_counted.h"
 #include "cc/test/layer_tree_pixel_test.h"
 
@@ skipping 20 matching lines @@
 };
 
 class LayerTreeHostPixelResourceTest : public LayerTreePixelTest {
  public:
   explicit LayerTreeHostPixelResourceTest(PixelResourceTestCase test_case);
   LayerTreeHostPixelResourceTest();
 
   void CreateResourceAndTileTaskWorkerPool(
       LayerTreeHostImpl* host_impl,
       scoped_ptr<TileTaskWorkerPool>* tile_task_worker_pool,
-      scoped_ptr<ResourcePool>* resource_pool,
-      scoped_ptr<ResourcePool>* staging_resource_pool) override;
+      scoped_ptr<ResourcePool>* resource_pool) override;
 
   void RunPixelResourceTest(scoped_refptr<Layer> content_root,
                             base::FilePath file_name);
 
   enum TileTaskWorkerPoolOption {
     BITMAP_TILE_TASK_WORKER_POOL,
     GPU_TILE_TASK_WORKER_POOL,
     ZERO_COPY_TILE_TASK_WORKER_POOL,
     ONE_COPY_TILE_TASK_WORKER_POOL,
     PIXEL_BUFFER_TILE_TASK_WORKER_POOL,
   };
 
  protected:
-  unsigned staging_texture_target_;
   unsigned draw_texture_target_;
   TileTaskWorkerPoolOption resource_pool_option_;
   bool initialized_;
 
   void InitializeFromTestCase(PixelResourceTestCase test_case);
 
  private:
   PixelResourceTestCase test_case_;
 };
 
@@ skipping 14 matching lines @@
 class ParameterizedPixelResourceTest
     : public LayerTreeHostPixelResourceTest,
       public ::testing::WithParamInterface<PixelResourceTestCase> {
  public:
   ParameterizedPixelResourceTest();
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_LAYER_TREE_PIXEL_RESOURCE_TEST_H_