Changing some PeerConnection-related comments.

webrtc/pc/peerconnectionfactory.cc

 /*
  *  Copyright 2004 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 191 matching lines @@
   if (!default_network_manager_) {
     return false;
   }
 
   default_socket_factory_.reset(
       new rtc::BasicPacketSocketFactory(network_thread_));
   if (!default_socket_factory_) {
     return false;
   }
 
-  // TODO:  Need to make sure only one VoE is created inside
-  // WebRtcMediaEngine.
   std::unique_ptr<cricket::MediaEngineInterface> media_engine =
       worker_thread_->Invoke<std::unique_ptr<cricket::MediaEngineInterface>>(
           RTC_FROM_HERE,
           rtc::Bind(&PeerConnectionFactory::CreateMediaEngine_w, this));
 
   channel_manager_.reset(new cricket::ChannelManager(
       std::move(media_engine), worker_thread_, network_thread_));
 
   channel_manager_->SetVideoRtxEnabled(true);
   channel_manager_->SetCryptoOptions(options_.crypto_options);
@@ skipping 171 matching lines @@
 PeerConnectionFactory::CreateMediaEngine_w() {
   RTC_DCHECK(worker_thread_ == rtc::Thread::Current());
   return std::unique_ptr<cricket::MediaEngineInterface>(
       cricket::WebRtcMediaEngineFactory::Create(
           default_adm_.get(), audio_decoder_factory_,
           video_encoder_factory_.get(), video_decoder_factory_.get(),
           external_audio_mixer_));
 }
 
 }  // namespace webrtc