Add support for GCM cipher suites from RFC 7714.

talk/session/media/channelmanager.h

 /*
  * 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 114 matching lines @@
   // Indicates whether any channels exist.
   bool has_channels() const {
     return (!voice_channels_.empty() || !video_channels_.empty());
   }
 
   bool GetOutputVolume(int* level);
   bool SetOutputVolume(int level);
   // RTX will be enabled/disabled in engines that support it. The supporting
   // engines will start offering an RTX codec. Must be called before Init().
   bool SetVideoRtxEnabled(bool enable);
+  bool SetEnableGcmCryptoSuites(bool enable);
 
   // Starts/stops the local microphone and enables polling of the input level.
   bool capturing() const { return capturing_; }
 
   // Gets capturer's supported formats in a thread safe manner
   std::vector<cricket::VideoFormat> GetSupportedFormats(
       VideoCapturer* capturer) const;
   // The following are done in the new "CaptureManager" style that
   // all local video capturers, processors, and managers should move to.
   // TODO(pthatcher): Make methods nicer by having start return a handle that
@@ skipping 77 matching lines @@
   rtc::Thread* main_thread_;
   rtc::Thread* worker_thread_;
 
   VoiceChannels voice_channels_;
   VideoChannels video_channels_;
   DataChannels data_channels_;
 
   int audio_output_volume_;
   VideoRenderer* local_renderer_;
   bool enable_rtx_;
+  bool enable_gcm_crypto_suites_;
 
   bool capturing_;
 };
 
 }  // namespace cricket
 
 #endif  // TALK_SESSION_MEDIA_CHANNELMANAGER_H_