Extract a DOMWindow interface from LocalDOMWindow and use it in the idl.

Source/bindings/core/v8/BindingSecurity.cpp

Index: Source/bindings/core/v8/BindingSecurity.cpp
diff --git a/Source/bindings/core/v8/BindingSecurity.cpp b/Source/bindings/core/v8/BindingSecurity.cpp
index f3cb1164c7db70100bbca238c5739766269415ea..61c8742b83008cd4bedacf1fd2bc8b86848c9d37 100644
--- a/Source/bindings/core/v8/BindingSecurity.cpp
+++ b/Source/bindings/core/v8/BindingSecurity.cpp
@@ -72,9 +72,10 @@ static bool canAccessDocument(v8::Isolate* isolate, Document* targetDocument, Se
     if (isDocumentAccessibleFromDOMWindow(targetDocument, callingWindow))
         return true;
 
+    // FIXME: This logic looks unnecessarily convoluted.
     if (reportingOption == ReportSecurityError && targetDocument->domWindow()) {
         if (LocalFrame* frame = targetDocument->frame())
-            frame->domWindow()->printErrorMessage(targetDocument->domWindow()->crossDomainAccessErrorMessage(callingWindow));
+            frame->localDOMWindow()->printErrorMessage(targetDocument->domWindow()->crossDomainAccessErrorMessage(callingWindow));
     }
 
     return false;