Don't use stale compositing state in LocalFrame::nodeImage

Source/core/clipboard/Clipboard.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 225 matching lines @@
 void Clipboard::setDragImageElement(Node* node, const IntPoint& loc)
 {
     setDragImage(0, node, loc);
 }
 
 PassOwnPtr<DragImage> Clipboard::createDragImage(IntPoint& loc, LocalFrame* frame) const
 {
     if (m_dragImageElement) {
         loc = m_dragLoc;
 
-        // https://code.google.com/p/chromium/issues/detail?id=354373
-        DisableCompositingQueryAsserts disabler;
-        return frame->nodeImage(m_dragImageElement.get());
+        return frame->nodeImage(*m_dragImageElement);
     }
     if (m_dragImage) {
         loc = m_dragLoc;
         return DragImage::create(m_dragImage->image());
     }
     return nullptr;
 }
 
 static ImageResource* getImageResource(Element* element)
 {
@@ skipping 266 matching lines @@
         return String("copy");
     }
 }
 
 void Clipboard::trace(Visitor* visitor)
 {
     visitor->trace(m_dataObject);
 }
 
 } // namespace WebCore