use Core::Id for ids in INavigationWidgetFactory

Change-Id: Ic793e01edf6a4d2fe61baadb3aa5bef817436d35
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/texteditor/outlinefactory.cpp

@@ -178,11 +178,6 @@ void OutlineWidgetStack::updateCurrentEditor(Core::IEditor *editor)
     }
 }
 
-OutlineFactory::OutlineFactory() :
-    Core::INavigationWidgetFactory()
-{
-}
-
 QList<IOutlineWidgetFactory*> OutlineFactory::widgetFactories() const
 {
     return m_factories;
@@ -203,9 +198,9 @@ int OutlineFactory::priority() const
     return 600;
 }
 
-QString OutlineFactory::id() const
+Core::Id OutlineFactory::id() const
 {
-    return QLatin1String("Outline");
+    return Core::Id("Outline");
 }
 
 QKeySequence OutlineFactory::activationSequence() const