Remove BrowserSignin, as it's not used anywhere.

chrome/browser/ui/webui/options/personal_options_handler.h

 // Copyright (c) 2011 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_OPTIONS_PERSONAL_OPTIONS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_PERSONAL_OPTIONS_HANDLER_H_
 #pragma once
 
 #include "base/basictypes.h"
-#include "chrome/browser/browser_signin.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 #if defined(OS_CHROMEOS)
 #include "content/common/notification_registrar.h"
 #endif
 
 // Chrome personal options page UI handler.
 class PersonalOptionsHandler : public OptionsPageUIHandler,
-                               public ProfileSyncServiceObserver,
-                               public BrowserSignin::SigninDelegate {
+                               public ProfileSyncServiceObserver {
  public:
   PersonalOptionsHandler();
   virtual ~PersonalOptionsHandler();
 
   // OptionsPageUIHandler implementation.
   virtual void GetLocalizedValues(DictionaryValue* localized_strings);
   virtual void Initialize();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages();
 
   // NotificationObserver implementation.
   virtual void Observe(int type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // ProfileSyncServiceObserver implementation.
   virtual void OnStateChanged();
 
-  // BrowserSignin::SigninDelegate implementation.
-  virtual void OnLoginSuccess();
-  virtual void OnLoginFailure(const GoogleServiceAuthError& error);
-
  private:
   void ObserveThemeChanged();
   void ThemesReset(const ListValue* args);
 #if defined(TOOLKIT_GTK)
   void ThemesSetGTK(const ListValue* args);
 #endif
 
 #if defined(OS_CHROMEOS)
   void LoadAccountPicture(const ListValue* args);
   NotificationRegistrar registrar_;
@@ skipping 13 matching lines @@
   // |args| is not used.
   void CreateProfile(const ListValue* args);
 
   // True if the multiprofiles switch is enabled.
   bool multiprofile_;
 
   DISALLOW_COPY_AND_ASSIGN(PersonalOptionsHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_PERSONAL_OPTIONS_HANDLER_H_