cc: Remove the opaque rect return-parameter from ContentLayerClient.

cc/resources/prioritized_tile_set_unittest.cc

 // Copyright 2013 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 <algorithm>
 #include <vector>
 
 #include "cc/resources/managed_tile_state.h"
 #include "cc/resources/prioritized_tile_set.h"
 #include "cc/resources/tile.h"
@@ skipping 55 matching lines @@
         resource_provider_.get(), GL_TEXTURE_2D, RGBA_8888);
     tile_manager_.reset(
         new FakeTileManager(&tile_manager_client_, resource_pool_.get()));
     picture_pile_ = FakePicturePileImpl::CreateInfiniteFilledPile();
   }
 
   scoped_refptr<Tile> CreateTile() {
     return tile_manager_->CreateTile(picture_pile_.get(),
                                      settings_.default_tile_size,
                                      gfx::Rect(),
-                                     gfx::Rect(),
                                      1.0,
                                      0,
                                      0,
                                      0);
   }
   void ReleaseTiles(std::vector<scoped_refptr<Tile> >* tiles) {
     for (std::vector<scoped_refptr<Tile> >::iterator it = tiles->begin();
          it != tiles->end();
          it++) {
       Tile* tile = it->get();
@@ skipping 679 matching lines @@
 
   set.Clear();
 
   PrioritizedTileSet::Iterator empty_it(&set, true);
   EXPECT_FALSE(empty_it);
 }
 
 }  // namespace
 }  // namespace cc