[Extensions UI] Use developerPrivate API for profile configuration

chrome/browser/ui/webui/extensions/extension_settings_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_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 66 matching lines @@
 
   // ExtensionManagement::Observer implementation.
   void OnExtensionManagementSettingsChanged() override;
 
   // WarningService::Observer implementation.
   void ExtensionWarningsChanged() override;
 
   // Helper method that reloads all unpacked extensions.
   void ReloadUnpackedExtensions();
 
-  // Callback for "requestExtensionsData" message.
-  void HandleRequestExtensionsData(const base::ListValue* args);
-
-  // Callback for "toggleDeveloperMode" message.
-  void HandleToggleDeveloperMode(const base::ListValue* args);
-
   // Callback for "launch" message.
   void HandleLaunchMessage(const base::ListValue* args);
 
   // Callback for "repair" message.
   void HandleRepairMessage(const base::ListValue* args);
 
   // Callback for "options" message.
   void HandleOptionsMessage(const base::ListValue* args);
 
   // Callback for "autoupdate" message.
@@ skipping 53 matching lines @@
 
   ScopedObserver<ExtensionManagement, ExtensionManagement::Observer>
       extension_management_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionSettingsHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_