Have getChildNodes() take a ContainerNode in argument

Source/core/editing/ApplyStyleCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008, 2009 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 1041 matching lines @@
     if (!highestAncestor)
         return;
 
     // The outer loop is traversing the tree vertically from highestAncestor to targetNode
     RefPtrWillBeRawPtr<Node> current = highestAncestor;
     // Along the way, styled elements that contain targetNode are removed and accumulated into elementsToPushDown.
     // Each child of the removed element, exclusing ancestors of targetNode, is then wrapped by clones of elements in elementsToPushDown.
     WillBeHeapVector<RefPtrWillBeMember<Element> > elementsToPushDown;
     while (current && current != targetNode && current->contains(targetNode)) {
         NodeVector currentChildren;
-        getChildNodes(*current, currentChildren);
+        getChildNodes(toContainerNode(*current), currentChildren);

[Inactive, 2014/07/31 20:32:55]

Safe because of contains() call above.

         RefPtrWillBeRawPtr<Element> styledElement = nullptr;
         if (current->isStyledElement() && isStyledInlineElementToRemove(toElement(current))) {
             styledElement = toElement(current);
             elementsToPushDown.append(styledElement);
         }
 
         RefPtrWillBeRawPtr<EditingStyle> styleToPushDown = EditingStyle::create();
         if (current->isHTMLElement())
             removeInlineStyleFromElement(style, toHTMLElement(current), RemoveIfNeeded, styleToPushDown.get());
 
@@ skipping 498 matching lines @@
 void ApplyStyleCommand::trace(Visitor* visitor)
 {
     visitor->trace(m_style);
     visitor->trace(m_start);
     visitor->trace(m_end);
     visitor->trace(m_styledInlineElement);
     CompositeEditCommand::trace(visitor);
 }
 
 }