Add support for GCM cipher suites from RFC 7714.

webrtc/api/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 146 matching lines @@
   // WebRtcMediaEngine.
   cricket::MediaEngineInterface* media_engine =
       worker_thread_->Invoke<cricket::MediaEngineInterface*>(
           RTC_FROM_HERE,
           rtc::Bind(&PeerConnectionFactory::CreateMediaEngine_w, this));
 
   channel_manager_.reset(new cricket::ChannelManager(
       media_engine, worker_thread_, network_thread_));
 
   channel_manager_->SetVideoRtxEnabled(true);
+  channel_manager_->SetCryptoOptions(options_.crypto_options);
   if (!channel_manager_->Init()) {
     return false;
   }
 
   return true;
 }
 
+void PeerConnectionFactory::SetOptions(const Options& options) {
+  options_ = options;
+  if (channel_manager_) {
+    channel_manager_->SetCryptoOptions(options.crypto_options);
+  }
+}
+
 rtc::scoped_refptr<AudioSourceInterface>
 PeerConnectionFactory::CreateAudioSource(
     const MediaConstraintsInterface* constraints) {
   RTC_DCHECK(signaling_thread_->IsCurrent());
   rtc::scoped_refptr<LocalAudioSource> source(
       LocalAudioSource::Create(options_, constraints));
   return source;
 }
 
 rtc::scoped_refptr<AudioSourceInterface>
@@ skipping 134 matching lines @@
 cricket::MediaEngineInterface* PeerConnectionFactory::CreateMediaEngine_w() {
   ASSERT(worker_thread_ == rtc::Thread::Current());
   return cricket::WebRtcMediaEngineFactory::Create(
       default_adm_.get(),
       audio_decoder_factory_,
       video_encoder_factory_.get(),
       video_decoder_factory_.get());
 }
 
 }  // namespace webrtc