Introduce NodeTraversal::ancestorsOf() and inclusiveAncestors() for range-based for loop

third_party/WebKit/Source/core/editing/commands/SimplifyMarkupCommand.cpp

 /*
  * Copyright (C) 2012 Apple Computer, 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 62 matching lines @@
             if (currentNode->firstChild() != currentNode->lastChild()) {
                 topNodeWithStartingStyle = 0;
                 break;
             }
 
             if (!currentNode->computedStyle()->visualInvalidationDiff(*startingStyle).hasDifference())
                 topNodeWithStartingStyle = currentNode;
 
         }
         if (topNodeWithStartingStyle) {
-            for (ContainerNode* node = startingNode; node != topNodeWithStartingStyle; node = node->parentNode())
-                nodesToRemove.append(node);
+            for (Node& node : NodeTraversal::ancestorsOrSelfOf(startingNode)) {
+                if (node == topNodeWithStartingStyle)
+                    break;
+                nodesToRemove.append(static_cast<ContainerNode*>(&node));
+            }
         }
     }
 
     // we perform all the DOM mutations at once.
     for (size_t i = 0; i < nodesToRemove.size(); ++i) {
         // FIXME: We can do better by directly moving children from nodesToRemove[i].
         int numPrunedAncestors = pruneSubsequentAncestorsToRemove(nodesToRemove, i, editingState);
         if (editingState->isAborted())
             return;
         if (numPrunedAncestors < 0)
@@ skipping 36 matching lines @@
 }
 
 DEFINE_TRACE(SimplifyMarkupCommand)
 {
     visitor->trace(m_firstNode);
     visitor->trace(m_nodeAfterLast);
     CompositeEditCommand::trace(visitor);
 }
 
 } // namespace blink