Replace remaining references to imported/wpt with external/wpt

third_party/WebKit/Source/core/dom/ContainerNode.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2013 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
@@ skipping 406 matching lines @@
 
   ChildListMutationScope mutation(*this);
   // 7. Let reference child be child’s next sibling.
   Node* next = oldChild->nextSibling();
   // 8. If reference child is node, set it to node’s next sibling.
   if (next == newChild)
     next = newChild->nextSibling();
 
   // TODO(tkent): According to the specification, we should remove |newChild|
   // from its parent here, and create a separated mutation record for it.
-  // Refer to imported/wpt/dom/nodes/MutationObserver-childList.html.
+  // Refer to external/wpt/dom/nodes/MutationObserver-childList.html.
 
   // 12. If child’s parent is not null, run these substeps:
   //    1. Set removedNodes to a list solely containing child.
   //    2. Remove child from its parent with the suppress observers flag set.
   removeChild(oldChild, exceptionState);
   if (exceptionState.hadException())
     return nullptr;
 
   // Does this one more time because removeChild() fires a MutationEvent.
   if (!checkAcceptChild(newChild, oldChild, exceptionState))
@@ skipping 1064 matching lines @@
     return true;
 
   if (node->isElementNode() && toElement(node)->shadow())
     return true;
 
   return false;
 }
 #endif
 
 }  // namespace blink