Update GnubbyAuthHandler to use the current session ID

remoting/host/security_key/fake_ipc_gnubby_auth_handler.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/host/security_key/fake_ipc_gnubby_auth_handler.h"
 
 #include <memory>
 
 #include "base/time/time.h"
 #include "ipc/ipc_channel.h"
@@ skipping 22 matching lines @@
 
 void FakeIpcGnubbyAuthHandler::SendClientResponse(
     int connection_id,
     const std::string& response_data) {}
 
 void FakeIpcGnubbyAuthHandler::SendErrorAndCloseConnection(int connection_id) {}
 
 void FakeIpcGnubbyAuthHandler::SetSendMessageCallback(
     const SendMessageCallback& callback) {}
 
+void FakeIpcGnubbyAuthHandler::SetSessionIdCallback(
+    const SessionIdCallback& callback) {}
+
 size_t FakeIpcGnubbyAuthHandler::GetActiveConnectionCountForTest() const {
   return 0;
 }
 
 void FakeIpcGnubbyAuthHandler::SetRequestTimeoutForTest(
     base::TimeDelta timeout) {}
 
 bool FakeIpcGnubbyAuthHandler::OnMessageReceived(const IPC::Message& message) {
   // This class does handle any IPC messages sent by the client.
   return false;
 }
 
 void FakeIpcGnubbyAuthHandler::OnChannelConnected(int32_t peer_pid) {
   ASSERT_TRUE(ipc_server_channel_->Send(
       new ChromotingNetworkToRemoteSecurityKeyMsg_ConnectionDetails(
           ipc_security_key_channel_name_)));
 }
 
 void FakeIpcGnubbyAuthHandler::OnChannelError() {}
 
 }  // namespace remoting