Cleanup: Remove unused variables in chrome/ found by Scythe.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h

 // Copyright (c) 2013 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 CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 425 matching lines @@
   // Network state informer used to keep signin screen up.
   scoped_refptr<NetworkStateInformer> network_state_informer_;
 
   // Set to true once |LOGIN_WEBUI_VISIBLE| notification is observed.
   bool webui_visible_ = false;
   bool preferences_changed_delayed_ = false;
 
   NetworkErrorModel* network_error_model_;
   CoreOobeActor* core_oobe_actor_;
 
-  bool is_first_update_state_call_ = false;
   bool offline_login_active_ = false;
   NetworkStateInformer::State last_network_state_ =
       NetworkStateInformer::UNKNOWN;
 
   base::CancelableClosure update_state_closure_;
   base::CancelableClosure connecting_closure_;
 
   content::NotificationRegistrar registrar_;
 
   // Whether there is an auth UI pending. This flag is set on receiving
@@ skipping 31 matching lines @@
   scoped_ptr<ErrorScreensHistogramHelper> histogram_helper_;
 
   base::WeakPtrFactory<SigninScreenHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SIGNIN_SCREEN_HANDLER_H_