Revert "cc: Remove Tile refcounting and RefCountedManaged."

cc/resources/picture_layer_tiling_unittest.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 <limits>
 #include <set>
 
 #include "cc/base/math_util.h"
 #include "cc/resources/picture_layer_tiling.h"
 #include "cc/resources/picture_layer_tiling_set.h"
@@ skipping 1933 matching lines @@
   EXPECT_FALSE(active_tiling->TileAt(0, 0));
   EXPECT_FALSE(recycle_tiling->TileAt(0, 0));
 }
 
 TEST_F(PictureLayerTilingIteratorTest, ResizeTilesAndUpdateToCurrent) {
   // The tiling has four rows and three columns.
   Initialize(gfx::Size(150, 100), 1.f, gfx::Size(250, 150));
   tiling_->CreateAllTilesForTesting();
   EXPECT_EQ(150, tiling_->TilingDataForTesting().max_texture_size().width());
   EXPECT_EQ(100, tiling_->TilingDataForTesting().max_texture_size().height());
-  EXPECT_EQ(4u, tiling_->AllTilesForTesting().size());
+  EXPECT_EQ(4u, tiling_->AllRefTilesForTesting().size());
 
   client_.SetTileSize(gfx::Size(250, 200));
 
   // Tile size in the tiling should still be 150x100.
   EXPECT_EQ(150, tiling_->TilingDataForTesting().max_texture_size().width());
   EXPECT_EQ(100, tiling_->TilingDataForTesting().max_texture_size().height());
 
   // The layer's size isn't changed, but the tile size was.
   scoped_refptr<FakePicturePileImpl> pile =
       FakePicturePileImpl::CreateFilledPileWithDefaultTileSize(
           gfx::Size(250, 150));
   tiling_->SetRasterSourceAndResize(pile);
 
   // Tile size in the tiling should be resized to 250x200.
   EXPECT_EQ(250, tiling_->TilingDataForTesting().max_texture_size().width());
   EXPECT_EQ(200, tiling_->TilingDataForTesting().max_texture_size().height());
-  EXPECT_EQ(0u, tiling_->AllTilesForTesting().size());
+  EXPECT_EQ(0u, tiling_->AllRefTilesForTesting().size());
 }
 
 }  // namespace
 }  // namespace cc