Add support for GCM cipher suites from RFC 7714.

talk/session/media/mediasession.h

Index: talk/session/media/mediasession.h
diff --git a/talk/session/media/mediasession.h b/talk/session/media/mediasession.h
index 8a7f4ccf06758db5453b84c43bfadc1f2dceddd6..29474603f8f6d8685da1dbe6a8b812fe989a066c 100644
--- a/talk/session/media/mediasession.h
+++ b/talk/session/media/mediasession.h
@@ -103,7 +103,8 @@ struct MediaSessionOptions {
       rtcp_mux_enabled(true),
       bundle_enabled(false),
       video_bandwidth(kAutoBandwidth),
-      data_bandwidth(kDataMaxBandwidth) {
+      data_bandwidth(kDataMaxBandwidth),
+      enable_gcm_ciphers(false) {

[pthatcher1, 2015/12/18 20:31:32]

Same here: can you change it to enable_gcm_crypto_suites?

[joachim, 2015/12/19 15:26:23]

Done.

   }
 
   bool has_audio() const {
@@ -144,6 +145,7 @@ struct MediaSessionOptions {
   // bps. -1 == auto.
   int video_bandwidth;
   int data_bandwidth;
+  bool enable_gcm_ciphers;
   TransportOptions transport_options;
 
   struct Stream {
@@ -555,6 +557,8 @@ void GetSupportedDataCryptoSuiteNames(
     std::vector<std::string>* crypto_suite_names);
 void GetDefaultSrtpCryptoSuiteNames(
     std::vector<std::string>* crypto_suite_names);
+void FilterGcmCiphers(std::vector<int>* crypto_suites);
+void FilterGcmCipherNames(std::vector<std::string>* crypto_suites);
 
 }  // namespace cricket