Further polish to extensions_ui page

chrome/browser/extensions/extensions_ui.h

Index: chrome/browser/extensions/extensions_ui.h
diff --git a/chrome/browser/extensions/extensions_ui.h b/chrome/browser/extensions/extensions_ui.h
index f3155049d28fe9c7a5be07b7a11ed8a0c5d41be5..37e73b62ed1e574ae3a139eafef4fc07a37dd489 100644
--- a/chrome/browser/extensions/extensions_ui.h
+++ b/chrome/browser/extensions/extensions_ui.h
@@ -20,6 +20,7 @@ class DictionaryValue;
 class Extension;
 class ExtensionsService;
 class FilePath;
+class PrefService;
 class UserScript;
 class Value;
 
@@ -83,6 +84,9 @@ class ExtensionsDOMHandler
   // Callback for "requestExtensionsData" message.
   void HandleRequestExtensionsData(const Value* value);
 
+  // Callback for "toggleDeveloperMode" message.
+  void HandleToggleDeveloperMode(const Value* value);
+
   // Callback for "inspect" message.
   void HandleInspectMessage(const Value* value);
 
@@ -153,6 +157,8 @@ class ExtensionsUI : public DOMUI {
 
   static RefCountedMemory* GetFaviconResourceBytes();
 
+  static void RegisterUserPrefs(PrefService* prefs);
+
  private:
   DISALLOW_COPY_AND_ASSIGN(ExtensionsUI);
 };