Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/html/HTMLElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004-2008, 2013, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Motorola Mobility. 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 732 matching lines @@
 void HTMLElement::adjustDirectionalityIfNeededAfterChildAttributeChanged(Element* child)
 {
     ASSERT(selfOrAncestorHasDirAutoAttribute());
     Node* strongDirectionalityTextNode;
     TextDirection textDirection = directionality(&strongDirectionalityTextNode);
     setHasDirAutoFlagRecursively(child, false);
     if (renderer() && renderer()->style() && renderer()->style()->direction() != textDirection) {
         Element* elementToAdjust = this;
         for (; elementToAdjust; elementToAdjust = elementToAdjust->parentElement()) {
             if (elementAffectsDirectionality(elementToAdjust)) {
-                elementToAdjust->setNeedsStyleRecalc(SubtreeStyleChange);
+                elementToAdjust->setNeedsStyleRecalc(StyleRecalcDueToWritingModeChange, SubtreeStyleChange);
                 return;
             }
         }
     }
 }
 
 void HTMLElement::calculateAndAdjustDirectionality()
 {
     Node* strongDirectionalityTextNode;
     TextDirection textDirection = directionality(&strongDirectionalityTextNode);
     setHasDirAutoFlagRecursively(this, hasDirectionAuto(), strongDirectionalityTextNode);
     for (ShadowRoot* root = youngestShadowRoot(); root; root = root->olderShadowRoot())
         setHasDirAutoFlagRecursively(root, hasDirectionAuto());
     if (renderer() && renderer()->style() && renderer()->style()->direction() != textDirection)
-        setNeedsStyleRecalc(SubtreeStyleChange);
+        setNeedsStyleRecalc(StyleRecalcDueToWritingModeChange, SubtreeStyleChange);
 }
 
 void HTMLElement::adjustDirectionalityIfNeededAfterChildrenChanged(const ChildrenChange& change)
 {
     if (!selfOrAncestorHasDirAutoAttribute())
         return;
 
     Node* oldMarkedNode = change.siblingBeforeChange ? NodeTraversal::nextSkippingChildren(*change.siblingBeforeChange) : 0;
     while (oldMarkedNode && elementAffectsDirectionality(oldMarkedNode))
         oldMarkedNode = NodeTraversal::nextSkippingChildren(*oldMarkedNode, this);
@@ skipping 216 matching lines @@
 #ifndef NDEBUG
 
 // For use in the debugger
 void dumpInnerHTML(blink::HTMLElement*);
 
 void dumpInnerHTML(blink::HTMLElement* element)
 {
     printf("%s\n", element->innerHTML().ascii().data());
 }
 #endif