Add support for GCM cipher suites from RFC 7714.

webrtc/base/opensslstreamadapter.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 38 matching lines @@
 // SSL_CTX_set_tlsext_use_srtp().
 struct SrtpCipherMapEntry {
   const char* internal_name;
   const int id;
 };
 
 // This isn't elegant, but it's better than an external reference
 static SrtpCipherMapEntry SrtpCipherMap[] = {
     {"SRTP_AES128_CM_SHA1_80", SRTP_AES128_CM_SHA1_80},
     {"SRTP_AES128_CM_SHA1_32", SRTP_AES128_CM_SHA1_32},
+    {"SRTP_AEAD_AES_128_GCM", SRTP_AEAD_AES_128_GCM},
+    {"SRTP_AEAD_AES_256_GCM", SRTP_AEAD_AES_256_GCM},
     {nullptr, 0}};
 #endif
 
 #ifdef OPENSSL_IS_BORINGSSL
 static void TimeCallback(const SSL* ssl, struct timeval* out_clock) {
   uint64_t time = TimeNanos();
   out_clock->tv_sec = time / kNumNanosecsPerSec;
   out_clock->tv_usec = time / kNumNanosecsPerMicrosec;
 }
 #else  // #ifdef OPENSSL_IS_BORINGSSL
@@ skipping 1150 matching lines @@
         return true;
     }
   }
 
   return false;
 }
 
 }  // namespace rtc
 
 #endif  // HAVE_OPENSSL_SSL_H