cc: Do not cleanup tiles with raster tasks.

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>
 
 #include "cc/test/fake_picture_pile_impl.h"
 #include "cc/test/fake_tile_manager.h"
@@ skipping 61 matching lines @@
 
 const Region* FakePictureLayerTilingClient::GetInvalidation() {
   return &invalidation_;
 }
 
 const PictureLayerTiling* FakePictureLayerTilingClient::GetTwinTiling(
       const PictureLayerTiling* tiling) const {
   return twin_tiling_;
 }
 
+WhichTree FakePictureLayerTilingClient::GetTree() const {
+  // TODO(sohanjg): Find correct tree for test.

[reveman, 2014/07/30 14:24:01]

I assume that this needs to be fixed before landing this patch. Please explain
why not otherwise.

[sohanjg, 2014/07/30 17:27:04]

Done.

+  return PENDING_TREE;
+}
+
 }  // namespace cc