Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/html/HTMLOptionElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Motorola Mobility, Inc.  All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 165 matching lines @@
 
 void HTMLOptionElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     if (name == valueAttr) {
         if (HTMLDataListElement* dataList = ownerDataListElement())
             dataList->optionElementChildrenChanged();
     } else if (name == disabledAttr) {
         bool oldDisabled = m_disabled;
         m_disabled = !value.isNull();
         if (oldDisabled != m_disabled) {
-            didAffectSelector(AffectedSelectorDisabled | AffectedSelectorEnabled);
+            didAffectSelector(StyleChangeReasonForTracing::fromAttribute(disabledAttr), AffectedSelectorDisabled | AffectedSelectorEnabled);
             if (renderer() && renderer()->style()->hasAppearance())
                 RenderTheme::theme().stateChanged(renderer(), EnabledControlState);
         }
     } else if (name == selectedAttr) {
         if (bool willBeSelected = !value.isNull())
             setSelected(willBeSelected);
     } else if (name == labelAttr) {
         updateLabel();
     } else
         HTMLElement::parseAttribute(name, value);
@@ skipping 39 matching lines @@
     if (HTMLSelectElement* select = ownerSelectElement())
         select->optionSelectionStateChanged(this, selected);
 }
 
 void HTMLOptionElement::setSelectedState(bool selected)
 {
     if (m_isSelected == selected)
         return;
 
     m_isSelected = selected;
-    didAffectSelector(AffectedSelectorChecked);
+    didAffectSelector(StyleChangeReasonForTracing::fromAttribute(selectedAttr), AffectedSelectorChecked);
 
     if (HTMLSelectElement* select = ownerSelectElement())
         select->invalidateSelectedItems();
 }
 
 void HTMLOptionElement::childrenChanged(const ChildrenChange& change)
 {
     if (HTMLDataListElement* dataList = ownerDataListElement())
         dataList->optionElementChildrenChanged();
     else if (HTMLSelectElement* select = ownerSelectElement())
@@ skipping 153 matching lines @@
         ASSERT(parent);
         if (isHTMLOptGroupElement(*parent)) {
             RenderStyle* parentStyle = parent->renderStyle() ? parent->renderStyle() : parent->computedStyle();
             return !parentStyle || parentStyle->display() == NONE;
         }
     }
     return m_style->display() == NONE;
 }
 
 } // namespace blink