CC Animation: Use ElementId to attach CC animation players.

cc/test/layer_tree_host_common_test.cc

 // Copyright 2014 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_host_common_test.h"
 
 #include <stddef.h>
 
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 208 matching lines @@
 }
 
 bool LayerTreeHostCommonTestBase::UpdateLayerListContains(int id) const {
   for (size_t i = 0; i < update_layer_list_.size(); ++i) {
     if (update_layer_list_[i]->id() == id)
       return true;
   }
   return false;
 }
 
+scoped_refptr<Layer> LayerTreeHostCommonTestBase::CreateTestLayer() {
+  auto layer = Layer::Create();
+  layer->SetElementId(NextTestElementId());
+  return layer;
+}
+
+std::unique_ptr<LayerImpl> LayerTreeHostCommonTestBase::CreateTestLayerImpl(
+    LayerTreeImpl* tree_impl,
+    int id) {
+  auto layer = LayerImpl::Create(tree_impl, id);
+  layer->SetElementId(NextTestElementId());
+  return layer;
+}
+
 LayerTreeHostCommonTest::LayerTreeHostCommonTest()
     : LayerTreeHostCommonTestBase(LayerTreeSettings()) {}
 
 LayerTreeHostCommonTest::LayerTreeHostCommonTest(
     const LayerTreeSettings& settings)
     : LayerTreeHostCommonTestBase(settings) {
 }
 
 }  // namespace cc