Have NodeTraversal::nextSkippingChildren() take a reference

Source/core/page/FocusController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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
@@ skipping 761 matching lines @@
     ASSERT(container);
     Element* focusedElement = (focusedFrame() && focusedFrame()->document()) ? focusedFrame()->document()->focusedElement() : 0;
 
     Element* element = ElementTraversal::firstWithin(container);
     FocusCandidate current;
     current.rect = startingRect;
     current.focusableNode = focusedElement;
     current.visibleNode = focusedElement;
 
     for (; element; element = (element->isFrameOwnerElement() || canScrollInDirection(element, direction))
-        ? ElementTraversal::nextSkippingChildren(element, container)
+        ? ElementTraversal::nextSkippingChildren(*element, container)
         : ElementTraversal::next(*element, container)) {
         if (element == focusedElement)
             continue;
 
         if (!element->isKeyboardFocusable() && !element->isFrameOwnerElement() && !canScrollInDirection(element, direction))
             continue;
 
         FocusCandidate candidate = FocusCandidate(element, direction);
         if (candidate.isNull())
             continue;
@@ skipping 107 matching lines @@
         startingRect = nodeRectInAbsoluteCoordinates(container, true /* ignore border */);
         container = scrollableEnclosingBoxOrParentFrameForNodeInDirection(direction, container);
         if (container && container->isDocumentNode())
             toDocument(container)->updateLayoutIgnorePendingStylesheets();
     } while (!consumed && container);
 
     return consumed;
 }
 
 } // namespace WebCore