Moved RootFrameViewport creation to happen after document attachment

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

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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
@@ skipping 205 matching lines @@
     // Objects with background-attachment:fixed.
     void addBackgroundAttachmentFixedObject(LayoutObject*);
     void removeBackgroundAttachmentFixedObject(LayoutObject*);
     bool hasBackgroundAttachmentFixedObjects() const { return m_backgroundAttachmentFixedObjects.size(); }
     void invalidateBackgroundAttachmentFixedObjects();
 
     void handleLoadCompleted();
 
     void updateDocumentAnnotatedRegions() const;
 
+    void didAttachDocument();
+
     void restoreScrollbar();
 
     void postLayoutTimerFired(Timer<FrameView>*);
 
     bool safeToPropagateScrollToParent() const { return m_safeToPropagateScrollToParent; }
     void setSafeToPropagateScrollToParent(bool isSafe) { m_safeToPropagateScrollToParent = isSafe; }
 
     void addPart(LayoutPart*);
     void removePart(LayoutPart*);
 
@@ skipping 711 matching lines @@
     if (m_visuallyNonEmptyPixelCount > visualPixelThreshold)
         setIsVisuallyNonEmpty();
 }
 
 DEFINE_TYPE_CASTS(FrameView, Widget, widget, widget->isFrameView(), widget.isFrameView());
 DEFINE_TYPE_CASTS(FrameView, ScrollableArea, scrollableArea, scrollableArea->isFrameView(), scrollableArea.isFrameView());
 
 } // namespace blink
 
 #endif // FrameView_h