cc: Fix impl-side painting flashing due to missing tiles

cc/test/fake_picture_layer_tiling_client.cc

 // Copyright 2012 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 "cc/test/fake_picture_layer_tiling_client.h"
 
 #include <limits>
 
 namespace cc {
 
@@ skipping 18 matching lines @@
                     false,
                     false,
                     &stats_instrumentation_),
       pile_(new FakeInfinitePicturePileImpl()) {
 }
 
 FakePictureLayerTilingClient::~FakePictureLayerTilingClient() {
 }
 
 scoped_refptr<Tile> FakePictureLayerTilingClient::CreateTile(
-    PictureLayerTiling*,
+    const PictureLayerTiling* tiling,
     gfx::Rect rect) {
   return make_scoped_refptr(new Tile(&tile_manager_,
                                      pile_.get(),
                                      tile_size_,
                                      rect,
                                      gfx::Rect(),
                                      1,
                                      0));
 }
 
 void FakePictureLayerTilingClient::SetTileSize(gfx::Size tile_size) {
   tile_size_ = tile_size;
 }
 
 gfx::Size FakePictureLayerTilingClient::CalculateTileSize(
     gfx::Size /* content_bounds */) {
   return tile_size_;
 }
 
 const Region* FakePictureLayerTilingClient::GetInvalidation() {
   return NULL;
 }
 
 const PictureLayerTiling* FakePictureLayerTilingClient::GetTwinTiling(
       const PictureLayerTiling* tiling) {
   return NULL;
 }
 
 }  // namespace cc