Simplify adding callbacks.

chrome/browser/ui/webui/chromeos/login/enterprise_oauth_enrollment_screen_handler.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 CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENTERPRISE_OAUTH_ENROLLMENT_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENTERPRISE_OAUTH_ENROLLMENT_SCREEN_HANDLER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 63 matching lines @@
   virtual void OnUserInfoSuccess(const std::string& email) OVERRIDE;
   virtual void OnUserInfoFailure(const GoogleServiceAuthError& error) OVERRIDE;
 
   // Implements BrowsingDataRemover::Observer:
   virtual void OnBrowsingDataRemoverDone() OVERRIDE;
 
  private:
   class TokenRevoker;
 
   // Handlers for WebUI messages.
-  void HandleClose(const base::ListValue* args);
-  void HandleCompleteLogin(const base::ListValue* args);
-  void HandleRetry(const base::ListValue* args);
+  void HandleClose(const std::string& reason);
+  void HandleCompleteLogin(const std::string& user);
+  void HandleRetry();
 
   // Shows a given enrollment step.
   void ShowStep(const char* step);
 
   // Display the given i18n resource as error message.
   void ShowError(int message_id, bool retry);
 
   // Display the given string as error message.
   void ShowErrorMessage(const std::string& message, bool retry);
 
@@ skipping 44 matching lines @@
 
   // Helpers that revoke the tokens used.
   ScopedVector<TokenRevoker> token_revokers_;
 
   DISALLOW_COPY_AND_ASSIGN(EnterpriseOAuthEnrollmentScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENTERPRISE_OAUTH_ENROLLMENT_SCREEN_HANDLER_H_