Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/mojo/services/media_service.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 "media/mojo/services/media_service.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "media/base/media_log.h"
 #include "media/mojo/services/interface_factory_impl.h"
 #include "media/mojo/services/mojo_media_client.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/service_manager/public/cpp/connector.h"
 
 namespace media {
 
 // TODO(xhwang): Hook up MediaLog when possible.
 MediaService::MediaService(std::unique_ptr<MojoMediaClient> mojo_media_client)
-    : mojo_media_client_(std::move(mojo_media_client)),
-      media_log_(new MediaLog()) {
+    : mojo_media_client_(std::move(mojo_media_client)) {
   DCHECK(mojo_media_client_);
   registry_.AddInterface<mojom::MediaService>(this);
 }
 
 MediaService::~MediaService() {}
 
 void MediaService::OnStart() {
   ref_factory_.reset(new service_manager::ServiceContextRefFactory(
       base::Bind(&service_manager::ServiceContext::RequestQuit,
                  base::Unretained(context()))));
@@ skipping 20 matching lines @@
 
 void MediaService::CreateInterfaceFactory(
     mojom::InterfaceFactoryRequest request,
     service_manager::mojom::InterfaceProviderPtr host_interfaces) {
   // Ignore request if service has already stopped.
   if (!mojo_media_client_)
     return;
 
   mojo::MakeStrongBinding(
       base::MakeUnique<InterfaceFactoryImpl>(
-          std::move(host_interfaces), media_log_, ref_factory_->CreateRef(),
+          std::move(host_interfaces), &media_log_, ref_factory_->CreateRef(),
           mojo_media_client_.get()),
       std::move(request));
 }
 
 }  // namespace media