Using WeakPtr for requests to MediaStreamDispatcher.

content/renderer/media/media_stream_impl.cc

 // Copyright (c) 2012 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_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 159 matching lines @@
            << (audio ? "audio" : "")
            << (user_media_request.video() ? " video" : "") << "], "
            << security_origin << ")";
 
   user_media_requests_.insert(
       std::pair<int, WebKit::WebUserMediaRequest>(
           request_id, user_media_request));
 
   media_stream_dispatcher_->GenerateStream(
       request_id,
-      this,
+      AsWeakPtr(),
       media_stream::StreamOptions(audio, video_option),
       security_origin);
 }
 
 void MediaStreamImpl::cancelUserMediaRequest(
     const WebKit::WebUserMediaRequest& user_media_request) {
   DCHECK(CalledOnValidThread());
   // TODO(grunell): Implement.
   NOTIMPLEMENTED();
 }
@@ skipping 284 matching lines @@
 }
 
 MediaStreamImpl::VideoRendererWrapper::VideoRendererWrapper() {}
 
 MediaStreamImpl::VideoRendererWrapper::~VideoRendererWrapper() {}
 
 void MediaStreamImpl::VideoRendererWrapper::SetVideoDecoder(
     RTCVideoDecoder* decoder) {
   rtc_video_decoder_ = decoder;
 }