Transfer LayerImpl ownership to LayerTreeImpl

cc/layers/layer_unittest.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/layers/layer.h"
 
 #include <stddef.h>
 
 #include "base/thread_task_runner_handle.h"
 #include "cc/animation/animation_host.h"
@@ skipping 1112 matching lines @@
   scoped_refptr<Layer> child = Layer::Create();
 
   // Upon creation, layers should not have children or parent.
   ASSERT_EQ(0U, parent->children().size());
   EXPECT_FALSE(child->parent());
 
   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->AddChild(child));
 
   ASSERT_EQ(1U, parent->children().size());
-  EXPECT_EQ(child.get(), parent->children()[0].get());
+  EXPECT_EQ(child.get(), parent->children()[0]);
   EXPECT_EQ(parent.get(), child->parent());
   EXPECT_EQ(parent.get(), child->RootLayer());
 
   EXPECT_SET_NEEDS_FULL_TREE_SYNC(AtLeast(1), child->RemoveFromParent());
 }
 
 TEST_F(LayerTest, AddSameChildTwice) {
   EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AtLeast(1));
 
   scoped_refptr<Layer> parent = Layer::Create();
@@ skipping 1484 matching lines @@
   EXPECT_EQ(MutableProperty::kNone, impl_layer->mutable_properties());
 
   test_layer->PushPropertiesTo(impl_layer.get());
 
   EXPECT_EQ(2lu, impl_layer->element_id());
   EXPECT_EQ(MutableProperty::kTransform, impl_layer->mutable_properties());
 }
 
 }  // namespace
 }  // namespace cc