Add support for GCM cipher suites from RFC 7714.

webrtc/api/peerconnectioninterface.h

 /*
  *  Copyright 2012 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 575 matching lines @@
 // argument.
 class PeerConnectionFactoryInterface : public rtc::RefCountInterface {
  public:
   class Options {
    public:
     Options()
         : disable_encryption(false),
           disable_sctp_data_channels(false),
           disable_network_monitor(false),
           network_ignore_mask(rtc::kDefaultNetworkIgnoreMask),
-          ssl_max_version(rtc::SSL_PROTOCOL_DTLS_12) {}
+          ssl_max_version(rtc::SSL_PROTOCOL_DTLS_12),
+          crypto_options(rtc::CryptoOptions::NoGcm()) {}
     bool disable_encryption;
     bool disable_sctp_data_channels;
     bool disable_network_monitor;
 
     // Sets the network types to ignore. For instance, calling this with
     // ADAPTER_TYPE_ETHERNET | ADAPTER_TYPE_LOOPBACK will ignore Ethernet and
     // loopback interfaces.
     int network_ignore_mask;
 
     // Sets the maximum supported protocol version. The highest version
     // supported by both ends will be used for the connection, i.e. if one
     // party supports DTLS 1.0 and the other DTLS 1.2, DTLS 1.0 will be used.
     rtc::SSLProtocolVersion ssl_max_version;
+
+    // Sets crypto related options, e.g. enabled cipher suites.
+    rtc::CryptoOptions crypto_options;
   };
 
   virtual void SetOptions(const Options& options) = 0;
 
   virtual rtc::scoped_refptr<PeerConnectionInterface> CreatePeerConnection(
       const PeerConnectionInterface::RTCConfiguration& configuration,
       const MediaConstraintsInterface* constraints,
       std::unique_ptr<cricket::PortAllocator> allocator,
       std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator,
       PeerConnectionObserver* observer) = 0;
@@ skipping 110 matching lines @@
     cricket::WebRtcVideoEncoderFactory* encoder_factory,
     cricket::WebRtcVideoDecoderFactory* decoder_factory) {
   return CreatePeerConnectionFactory(
       worker_and_network_thread, worker_and_network_thread, signaling_thread,
       default_adm, encoder_factory, decoder_factory);
 }
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_PEERCONNECTIONINTERFACE_H_