Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/blink/webaudiosourceprovider_impl.cc

 // Copyright 2013 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/blink/webaudiosourceprovider_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 82 matching lines @@
   int channels_;
   int sample_rate_;
 
   CopyAudioCB copy_audio_bus_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(TeeFilter);
 };
 
 WebAudioSourceProviderImpl::WebAudioSourceProviderImpl(
     scoped_refptr<SwitchableAudioRendererSink> sink,
-    scoped_refptr<MediaLog> media_log)
+    MediaLog* media_log)
     : volume_(1.0),
       state_(kStopped),
       client_(nullptr),
       sink_(std::move(sink)),
       tee_filter_(new TeeFilter()),
-      media_log_(std::move(media_log)),
+      media_log_(media_log),
       weak_factory_(this) {}
 
 WebAudioSourceProviderImpl::~WebAudioSourceProviderImpl() {
 }
 
 void WebAudioSourceProviderImpl::SetClient(
     blink::WebAudioSourceProviderClient* client) {
   // Skip taking the lock if unnecessary. This function is the only setter for
   // |client_| so it's safe to check |client_| outside of the lock.
   if (client_ == client)
@@ skipping 212 matching lines @@
 
   return num_rendered_frames;
 }
 
 void WebAudioSourceProviderImpl::TeeFilter::OnRenderError() {
   DCHECK(IsInitialized());
   renderer_->OnRenderError();
 }
 
 }  // namespace media