HTMLMetaElement should not run script inside ::insertedInto

Source/core/html/HTMLMetaElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 34 matching lines @@
 
 private:
     explicit HTMLMetaElement(Document&);
 
     typedef void (HTMLMetaElement::*KeyValuePairCallback)(const String& key, const String& value, void* data);
     void processViewportKeyValuePair(const String& key, const String& value, void* data);
     void parseContentAttribute(const String& content, KeyValuePairCallback, void* data);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
+    virtual void didNotifySubtreeInsertionsToDocument() OVERRIDE;
 
     float parsePositiveNumber(const String& key, const String& value, bool* ok = 0);
 
     Length parseViewportValueAsLength(const String& key, const String& value);
     float parseViewportValueAsZoom(const String& key, const String& value);
     float parseViewportValueAsUserZoom(const String& key, const String& value);
     float parseViewportValueAsDPI(const String& key, const String& value);
 
     void reportViewportWarning(ViewportErrorCode, const String& replacement1, const String& replacement2);
 
     void process();
     void processViewportContentAttribute(const String& content, ViewportDescription::Type origin);
 };
 
 } // namespace WebCore
 
 #endif