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

third_party/WebKit/Source/core/frame/LocalDOMWindow.h

Index: third_party/WebKit/Source/core/frame/LocalDOMWindow.h
diff --git a/third_party/WebKit/Source/core/frame/LocalDOMWindow.h b/third_party/WebKit/Source/core/frame/LocalDOMWindow.h
index 90d1ab9378c0da8b31f197d4c31767d818a3a617..21688b2783adb88911c63a6ad41d8bcd977e0242 100644
--- a/third_party/WebKit/Source/core/frame/LocalDOMWindow.h
+++ b/third_party/WebKit/Source/core/frame/LocalDOMWindow.h
@@ -54,6 +54,7 @@ class DOMVisualViewport;
 class DOMWindowEventQueue;
 class Element;
 class EventQueue;
+class ExceptionState;
 class External;
 class FrameConsole;
 class FrameRequestCallback;
@@ -272,7 +273,8 @@ class CORE_EXPORT LocalDOMWindow final : public DOMWindow,
                   const AtomicString& frame_name,
                   const String& window_features_string,
                   LocalDOMWindow* calling_window,
-                  LocalDOMWindow* entered_window);
+                  LocalDOMWindow* entered_window,
+                  ExceptionState&);
 
   FrameConsole* GetFrameConsole() const;