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

content/renderer/media/media_stream_track.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_track.h"
 
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
 #include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
 
@@ skipping 11 matching lines @@
     : track_(track),
       muted_state_(false),
       is_local_track_(is_local_track){
 }
 
 MediaStreamTrack::~MediaStreamTrack() {
 }
 
 void MediaStreamTrack::SetEnabled(bool enabled) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  if (track_)
+  if (track_.get())
     track_->set_enabled(enabled);
 }
 
 void MediaStreamTrack::SetMutedState(bool muted_state) {
   DCHECK(thread_checker_.CalledOnValidThread());
   muted_state_ = muted_state;
 }
 
 bool MediaStreamTrack::GetMutedState(void) const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return muted_state_;
 }
 
 void MediaStreamTrack::Stop() {
   DCHECK(thread_checker_.CalledOnValidThread());
   // Stop means that a track should be stopped permanently. But
   // since there is no proper way of doing that on a remote track, we can
   // at least disable the track. Blink will not call down to the content layer
   // after a track has been stopped.
-  if (track_)
+  if (track_.get())
     track_->set_enabled(false);
 }
 
 webrtc::AudioTrackInterface* MediaStreamTrack::GetAudioAdapter() {
   DCHECK(thread_checker_.CalledOnValidThread());
   return static_cast<webrtc::AudioTrackInterface*>(track_.get());
 }
 
 }  // namespace content