Revert of Change WebRTC SslCipher to be exposed as number only.

webrtc/p2p/base/dtlstransportchannel.h

Index: webrtc/p2p/base/dtlstransportchannel.h
diff --git a/webrtc/p2p/base/dtlstransportchannel.h b/webrtc/p2p/base/dtlstransportchannel.h
index f1a5231f9ce7fa6cb18ec2d8e8896ace0569d53b..e52ca10d1d7b70737f3e7283a440bc04beb5eca6 100644
--- a/webrtc/p2p/base/dtlstransportchannel.h
+++ b/webrtc/p2p/base/dtlstransportchannel.h
@@ -135,13 +135,13 @@
   bool SetSrtpCiphers(const std::vector<std::string>& ciphers) override;
 
   // Find out which DTLS-SRTP cipher was negotiated
-  bool GetSrtpCryptoSuite(std::string* cipher) override;
+  bool GetSrtpCipher(std::string* cipher) override;
 
   bool GetSslRole(rtc::SSLRole* role) const override;
   bool SetSslRole(rtc::SSLRole role) override;
 
   // Find out which DTLS cipher was negotiated
-  bool GetSslCipherSuite(uint16_t* cipher) override;
+  bool GetSslCipher(std::string* cipher) override;
 
   // Once DTLS has been established, this method retrieves the certificate in
   // use by the remote peer, for use in external identity verification.