Throw in window.open() when an invalid URL is being passed

third_party/WebKit/Source/core/page/CreateWindow.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 18 matching lines @@
 
 #include "core/frame/LocalDOMWindow.h"
 #include "core/loader/FrameLoaderTypes.h"
 #include "core/loader/NavigationPolicy.h"
 #include "platform/wtf/text/WTFString.h"
 
 // To avoid conflicts with the CreateWindow macro from the Windows SDK...
 #undef CreateWindow
 
 namespace blink {
+class ExceptionState;
 class LocalFrame;
 struct FrameLoadRequest;
 struct WindowFeatures;
 
 DOMWindow* CreateWindow(const String& url_string,
                         const AtomicString& frame_name,
                         const WindowFeatures&,
                         LocalDOMWindow& calling_window,
                         LocalFrame& first_frame,
-                        LocalFrame& opener_frame);
+                        LocalFrame& opener_frame,
+                        ExceptionState&);
 
 void CreateWindowForRequest(const FrameLoadRequest&,
                             LocalFrame& opener_frame,
                             NavigationPolicy);
 
 }  // namespace blink
 
 #endif  // CreateWindow_h