Change WebRTC SslCipher to be exposed as number only.

webrtc/p2p/base/faketransportcontroller.h

Index: webrtc/p2p/base/faketransportcontroller.h
diff --git a/webrtc/p2p/base/faketransportcontroller.h b/webrtc/p2p/base/faketransportcontroller.h
index 826b1a638472d451113da178bd6d58147b83317f..ae8dd7412439d63a20115d9b1b4e7b81013c14b7 100644
--- a/webrtc/p2p/base/faketransportcontroller.h
+++ b/webrtc/p2p/base/faketransportcontroller.h
@@ -243,7 +243,7 @@ class FakeTransportChannel : public TransportChannelImpl,
     return true;
   }
 
-  bool GetSrtpCipher(std::string* cipher) override {
+  bool GetSrtpCipherByRfcName(std::string* cipher) override {
     if (!chosen_srtp_cipher_.empty()) {
       *cipher = chosen_srtp_cipher_;
       return true;
@@ -251,7 +251,7 @@ class FakeTransportChannel : public TransportChannelImpl,
     return false;
   }
 
-  bool GetSslCipher(std::string* cipher) override { return false; }
+  bool GetSslCipher(uint16_t* cipher) override { return false; }
 
   rtc::scoped_refptr<rtc::RTCCertificate> GetLocalCertificate() const {
     return local_cert_;