Revert of [DevTools] Inject element into toolbox window, do not load modules there.

Source/core/inspector/InspectorFrontendHost.idl

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 28 matching lines @@
     float zoomFactor();
 
     void setInjectedScriptForOrigin(DOMString origin, DOMString script);
 
     void copyText(DOMString text);
 
     [Custom] DOMString platform();
     [Custom] DOMString port();
     // FIXME: showContextMenu is here only for old frontends. Remove in M43.
     [Custom] void showContextMenu(MouseEvent event, any items);
-    [Custom] void showContextMenuAtPoint(float x, float y, any items, optional DOMWindow window);
+    [Custom] void showContextMenuAtPoint(float x, float y, any items);
     void sendMessageToBackend(DOMString message);
     void sendMessageToEmbedder(DOMString message);
 
     [Custom] void recordActionTaken(unsigned long actionCode);
     [Custom] void recordPanelShown(unsigned long panelCode);
 
     DOMString getSelectionBackgroundColor();
     DOMString getSelectionForegroundColor();
 
     boolean isUnderTest();
     boolean isHostedMode();
 };