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

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

 /*
 * Copyright (C) 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
@@ skipping 1689 matching lines @@
         }
     }
 
     // bail if none found
     if (!currLayoutObject)
         return 0;
 
     // search up the DOM tree for an anchor element
     // NOTE: this assumes that any non-image with an anchor is an HTMLAnchorElement
     Node* node = currLayoutObject->node();
-    for ( ; node; node = node->parentNode()) {
-        if (isHTMLAnchorElement(*node) || (node->layoutObject() && cache.getOrCreate(node->layoutObject())->isAnchor()))
-            return toElement(node);
+    if (!node)
+        return nullptr;
+    for (Node& runner : NodeTraversal::inclusiveAncestorsOf(*node)) {
+        if (isHTMLAnchorElement(runner) || (runner.layoutObject() && cache.getOrCreate(runner.layoutObject())->isAnchor()))
+            return toElement(&runner);
     }
 
     return 0;
 }
 
 //
 // Functions that retrieve the current selection.
 //
 
 AXObject::AXRange AXLayoutObject::selection() const
@@ skipping 742 matching lines @@
         if (label && label->layoutObject()) {
             LayoutRect labelRect = axObjectCache().getOrCreate(label)->elementRect();
             result.unite(labelRect);
         }
     }
 
     return result;
 }
 
 } // namespace blink