[Extensions UI] Use developerPrivate API for profile configuration

chrome/browser/ui/webui/extensions/extension_settings_handler.h

Index: chrome/browser/ui/webui/extensions/extension_settings_handler.h
diff --git a/chrome/browser/ui/webui/extensions/extension_settings_handler.h b/chrome/browser/ui/webui/extensions/extension_settings_handler.h
index bf680e92d16b027b49eb8979552a62f9caf72b33..9388ad384a9597989abf8240c218c390e9f11fd3 100644
--- a/chrome/browser/ui/webui/extensions/extension_settings_handler.h
+++ b/chrome/browser/ui/webui/extensions/extension_settings_handler.h
@@ -84,12 +84,6 @@ class ExtensionSettingsHandler
   // 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);