cc: Use Element Id to Record Animation Changes

cc/test/layer_tree_test.cc

 // Copyright 2011 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/layer_tree_test.h"
 
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
@@ skipping 661 matching lines @@
     scoped_refptr<Layer> root_layer = Layer::Create();
     root_layer->SetBounds(gfx::Size(1, 1));
     layer_tree_host()->SetRootLayer(root_layer);
   }
 
   gfx::Size root_bounds = layer_tree_host()->root_layer()->bounds();
   gfx::Size device_root_bounds = gfx::ScaleToCeiledSize(
       root_bounds, layer_tree_host()->device_scale_factor());
   layer_tree_host()->SetViewportSize(device_root_bounds);
   layer_tree_host()->root_layer()->SetIsDrawable(true);
+  layer_tree_host()->SetElementIdsForTesting();
 }
 
 void LayerTreeTest::Timeout() {
   timed_out_ = true;
   EndTest();
 }
 
 void LayerTreeTest::RealEndTest() {
   // TODO(mithro): Make this method only end when not inside an impl frame.
   bool main_frame_will_happen =
@@ skipping 177 matching lines @@
   DCHECK(task_runner_provider()->IsMainThread() ||
          task_runner_provider()->IsMainThreadBlocked());
   return layer_tree_host_.get();
 }
 
 Proxy* LayerTreeTest::proxy() {
   return layer_tree_host() ? layer_tree_host()->proxy() : NULL;
 }
 
 }  // namespace cc