Convert //cc from scoped_ptr to std::unique_ptr.

cc/animation/animation_host_perftest.cc

 // Copyright 2016 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/animation/animation_host.h"
 
 #include "base/thread_task_runner_handle.h"
 #include "cc/animation/animation_id_provider.h"
 #include "cc/animation/animation_player.h"
 #include "cc/animation/animation_timeline.h"
@@ skipping 96 matching lines @@
     do {
       host()->PushPropertiesTo(host_impl());
       timer_.NextLap();
     } while (!timer_.HasTimeLimitExpired());
 
     perf_test::PrintResult("push_properties_to", "", "", timer_.LapsPerSecond(),
                            "runs/s", true);
   }
 
  protected:
-  scoped_ptr<FakeLayerTreeHost> layer_tree_host_;
+  std::unique_ptr<FakeLayerTreeHost> layer_tree_host_;
   scoped_refptr<Layer> root_layer_;
   LayerImpl* root_layer_impl_;
 
   LapTimer timer_;
   TestTaskGraphRunner task_graph_runner_;
   FakeLayerTreeHostClient fake_client_;
 };
 
 TEST_F(AnimationHostPerfTest, Push1000PlayersPropertiesTo) {
   CreatePlayers(1000);
   DoTest();
 }
 
 TEST_F(AnimationHostPerfTest, Push10TimelinesPropertiesTo) {
   CreateTimelines(10);
   DoTest();
 }
 
 TEST_F(AnimationHostPerfTest, Push1000TimelinesPropertiesTo) {
   CreateTimelines(1000);
   DoTest();
 }
 
 }  // namespace cc