Remove GetTLSUniqueChannelBinding.

net/socket/ssl_server_socket_openssl.cc

Index: net/socket/ssl_server_socket_openssl.cc
diff --git a/net/socket/ssl_server_socket_openssl.cc b/net/socket/ssl_server_socket_openssl.cc
index 75a76da205b04ee514235352bb008d2c654de359..e98868e97c8520484fdb6a10eefbc22a9c3f3166 100644
--- a/net/socket/ssl_server_socket_openssl.cc
+++ b/net/socket/ssl_server_socket_openssl.cc
@@ -67,7 +67,6 @@ class SSLServerSocketOpenSSL : public SSLServerSocket {
                            const base::StringPiece& context,
                            unsigned char* out,
                            unsigned int outlen) override;
-  int GetTLSUniqueChannelBinding(std::string* out) override;
 
   // Socket interface (via StreamSocket).
   int Read(IOBuffer* buf,
@@ -253,11 +252,6 @@ int SSLServerSocketOpenSSL::ExportKeyingMaterial(
   return OK;
 }
 
-int SSLServerSocketOpenSSL::GetTLSUniqueChannelBinding(std::string* out) {
-  NOTIMPLEMENTED();
-  return ERR_NOT_IMPLEMENTED;
-}
-
 int SSLServerSocketOpenSSL::Read(IOBuffer* buf,
                                  int buf_len,
                                  const CompletionCallback& callback) {