Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/mojo/services/test_mojo_media_client.h

 // 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.
 
 #ifndef MEDIA_MOJO_SERVICES_TEST_MOJO_MEDIA_CLIENT_H_
 #define MEDIA_MOJO_SERVICES_TEST_MOJO_MEDIA_CLIENT_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 18 matching lines @@
   TestMojoMediaClient();
   ~TestMojoMediaClient() final;
 
   // MojoMediaClient implementation.
   void Initialize(service_manager::Connector* connector) final;
   scoped_refptr<AudioRendererSink> CreateAudioRendererSink(
       const std::string& audio_device_id) final;
   std::unique_ptr<VideoRendererSink> CreateVideoRendererSink(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) final;
   std::unique_ptr<RendererFactory> CreateRendererFactory(
-      const scoped_refptr<MediaLog>& media_log) final;
+      MediaLog* media_log) final;
   std::unique_ptr<CdmFactory> CreateCdmFactory(
       service_manager::mojom::InterfaceProvider* /* host_interfaces */) final;
 
  private:
   ScopedAudioManagerPtr audio_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(TestMojoMediaClient);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_TEST_MOJO_MEDIA_CLIENT_H_