Remove implicit conversions from scoped_refptr to T* in content/renderer/media/

content/renderer/media/media_stream_audio_source.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 "content/renderer/media/media_stream_audio_source.h"
 
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_view_impl.h"
 
 namespace content {
@@ skipping 30 matching lines @@
 void MediaStreamAudioSource::DoStopSource() {
   if (audio_capturer_.get())
     audio_capturer_->Stop();
 }
 
 void MediaStreamAudioSource::AddTrack(
     const blink::WebMediaStreamTrack& track,
     const blink::WebMediaConstraints& constraints,
     const ConstraintsCallback& callback) {
   // TODO(xians): Properly implement for audio sources.
-  if (!local_audio_source_) {
+  if (!local_audio_source_.get()) {
     if (!factory_->InitializeMediaStreamAudioSource(render_view_id_,
                                                     constraints,
                                                     this)) {
       // The source failed to start.
       // MediaStreamImpl rely on the |stop_callback| to be triggered when the
       // last track is removed from the source. But in this case, the source is
       // is not even started. So we need to fail both adding the track and
       // trigger |stop_callback|.
       callback.Run(this, MEDIA_DEVICE_TRACK_START_FAILURE, "");
       StopSource();
       return;
     }
   }
 
   factory_->CreateLocalAudioTrack(track);
   callback.Run(this, MEDIA_DEVICE_OK, "");
 }
 
 }  // namespace content