Mark template class RefCountedObject as final.

ortc/ortcrtpsenderadapter.cc

 /*
  *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 138 matching lines @@
     cricket::MediaType kind,
     RtpTransportInterface* transport,
     RtpTransportControllerAdapter* rtp_transport_controller)
     : kind_(kind),
       transport_(transport),
       rtp_transport_controller_(rtp_transport_controller) {}
 
 void OrtcRtpSenderAdapter::CreateInternalSender() {
   switch (kind_) {
     case cricket::MEDIA_TYPE_AUDIO:
-      internal_sender_ = new AudioRtpSender(
+      internal_sender_ = new rtc::RefCountedObject<AudioRtpSender>(
           rtp_transport_controller_->voice_channel(), nullptr);
       break;
     case cricket::MEDIA_TYPE_VIDEO:
-      internal_sender_ =
-          new VideoRtpSender(rtp_transport_controller_->video_channel());
+      internal_sender_ = new rtc::RefCountedObject<VideoRtpSender>(
+          rtp_transport_controller_->video_channel());
       break;
     case cricket::MEDIA_TYPE_DATA:
       RTC_NOTREACHED();
   }
   if (track_) {
     if (!internal_sender_->SetTrack(track_)) {
       // Since we checked the track type when it was set, this should never
       // happen...
       RTC_NOTREACHED();
     }
   }
 }
 
 }  // namespace webrtc