cc : Push layer lists instead of layer tree at commit and activation

cc/layers/picture_layer_impl_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 "cc/layers/picture_layer_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 2070 matching lines @@
       FakeRasterSource::CreateFilled(layer_bounds);
 
   host_impl()->CreatePendingTree();
   LayerTreeImpl* pending_tree = host_impl()->pending_tree();
 
   std::unique_ptr<FakePictureLayerImpl> pending_layer =
       FakePictureLayerImpl::CreateWithRasterSource(pending_tree, layer_id(),
                                                    pending_raster_source);
   pending_layer->SetDrawsContent(true);
   pending_tree->SetRootLayer(std::move(pending_layer));
+  pending_tree->BuildLayerListForTesting();
 
   FakePictureLayerImpl* raw_pending_layer = static_cast<FakePictureLayerImpl*>(
       host_impl()->pending_tree()->LayerById(layer_id()));
 
   // Set some state on the pending layer, make sure it is not clobbered
   // by a sync from the active layer.  This could happen because if the
   // pending layer has not been post-commit initialized it will attempt
   // to sync from the active layer.
   float raster_page_scale = 10.f * raw_pending_layer->raster_page_scale();
   raw_pending_layer->set_raster_page_scale(raster_page_scale);
@@ skipping 2661 matching lines @@
   // New low res tiling.
   EXPECT_TRUE(tilings->tiling_at(2)->may_contain_low_resolution_tiles());
 
   // This tiling will be high res now, it won't contain low res content since it
   // was all destroyed.
   EXPECT_FALSE(tilings->tiling_at(1)->may_contain_low_resolution_tiles());
 }
 
 }  // namespace
 }  // namespace cc