This broke M20 build.

remoting/host/signaling_connector.h

 // Copyright (c) 2012 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.
 
 #ifndef REMOTING_HOST_SIGNALING_CONNECTOR_H
 #define REMOTING_HOST_SIGNALING_CONNECTOR_H
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
@@ skipping 53 matching lines @@
   virtual void OnSignalStrategyStateChange(
       SignalStrategy::State state) OVERRIDE;
 
   // NetworkChangeNotifier::IPAddressObserver interface.
   virtual void OnIPAddressChanged() OVERRIDE;
 
   // NetworkChangeNotifier::OnlineStateObserver interface.
   virtual void OnOnlineStateChanged(bool online) OVERRIDE;
 
   // GaiaOAuthClient::Delegate interface.
-  virtual void OnRefreshTokenResponse(const std::string& user_email,
-                                      const std::string& access_token,
+  virtual void OnRefreshTokenResponse(const std::string& access_token,
                                       int expires_seconds) OVERRIDE;
   virtual void OnOAuthError() OVERRIDE;
   virtual void OnNetworkError(int response_code) OVERRIDE;
 
  private:
   void ScheduleTryReconnect();
   void ResetAndTryReconnect();
   void TryReconnect();
 
   void RefreshOAuthToken();
@@ skipping 11 matching lines @@
   base::Time auth_token_expiry_time_;
 
   base::OneShotTimer<SignalingConnector> timer_;
 
   DISALLOW_COPY_AND_ASSIGN(SignalingConnector);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SIGNALING_CONNECTOR_H