Return a copy of the supported RTP header extensions instead of a reference.

talk/session/media/channelmanager.cc

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 138 matching lines @@
 
   for (std::vector<AudioCodec>::const_iterator it =
            media_engine_->audio_codecs().begin();
       it != media_engine_->audio_codecs().end(); ++it) {
     codecs->push_back(*it);
   }
 }
 
 void ChannelManager::GetSupportedAudioRtpHeaderExtensions(
     RtpHeaderExtensions* ext) const {
-  *ext = media_engine_->audio_rtp_header_extensions();
+  *ext = media_engine_->GetAudioCapabilities().header_extensions;
 }
 
 void ChannelManager::GetSupportedVideoCodecs(
     std::vector<VideoCodec>* codecs) const {
   codecs->clear();
 
   std::vector<VideoCodec>::const_iterator it;
   for (it = media_engine_->video_codecs().begin();
       it != media_engine_->video_codecs().end(); ++it) {
     if (!enable_rtx_ && _stricmp(kRtxCodecName, it->name.c_str()) == 0) {
       continue;
     }
     codecs->push_back(*it);
   }
 }
 
 void ChannelManager::GetSupportedVideoRtpHeaderExtensions(
     RtpHeaderExtensions* ext) const {
-  *ext = media_engine_->video_rtp_header_extensions();
+  *ext = media_engine_->GetVideoCapabilities().header_extensions;
 }
 
 void ChannelManager::GetSupportedDataCodecs(
     std::vector<DataCodec>* codecs) const {
   *codecs = data_media_engine_->data_codecs();
 }
 
 bool ChannelManager::Init() {
   ASSERT(!initialized_);
   if (initialized_) {
@@ skipping 430 matching lines @@
   return worker_thread_->Invoke<bool>(
       Bind(&MediaEngineInterface::StartRtcEventLog, media_engine_.get(), file));
 }
 
 void ChannelManager::StopRtcEventLog() {
   worker_thread_->Invoke<void>(
       Bind(&MediaEngineInterface::StopRtcEventLog, media_engine_.get()));
 }
 
 }  // namespace cricket