Support a user-provided string for the TLS ALPN extension.

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 175 matching lines @@
     std::string uri;
     std::vector<std::string> urls;
     std::string username;
     std::string password;
     TlsCertPolicy tls_cert_policy = kTlsCertPolicySecure;
     // If the URIs in |urls| only contain IP addresses, this field can be used
     // to indicate the hostname, which may be necessary for TLS (using the SNI
     // extension). If |urls| itself contains the hostname, this isn't
     // necessary.
     std::string hostname;
+    // List of protocols to be used in the TLS ALPN extension.
+    std::vector<std::string> tls_alpn_protocols;
 
     bool operator==(const IceServer& o) const {
       return uri == o.uri && urls == o.urls && username == o.username &&
              password == o.password && tls_cert_policy == o.tls_cert_policy &&
-             hostname == o.hostname;
+             hostname == o.hostname &&
+             tls_alpn_protocols == o.tls_alpn_protocols;
     }
     bool operator!=(const IceServer& o) const { return !(*this == o); }
   };
   typedef std::vector<IceServer> IceServers;
 
   enum IceTransportsType {
     // TODO(pthatcher): Rename these kTransporTypeXXX, but update
     // Chromium at the same time.
     kNone,
     kRelay,
@@ skipping 1001 matching lines @@
     cricket::WebRtcVideoEncoderFactory* video_encoder_factory,
     cricket::WebRtcVideoDecoderFactory* video_decoder_factory,
     rtc::scoped_refptr<AudioMixer> audio_mixer,
     std::unique_ptr<cricket::MediaEngineInterface> media_engine,
     std::unique_ptr<CallFactoryInterface> call_factory,
     std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory);
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_PEERCONNECTIONINTERFACE_H_