Improve tracing for sibling style invalidation

third_party/WebKit/Source/core/css/RuleFeature.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 590 matching lines @@
 }
 
 void RuleFeatureSet::collectInvalidationSetsForClass(InvalidationLists& invalidationLists, Element& element, const AtomicString& className) const
 {
     if (RefPtrWillBeRawPtr<InvalidationData> invalidationData = m_classInvalidationSets.get(className)) {
         if (invalidationData->descendants()) {
             TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->descendants(), classChange, className);
             invalidationLists.descendants.append(invalidationData->descendants());
         }
         if (invalidationData->siblings()) {
-            if (element.parentElement())
-                TRACE_SCHEDULE_STYLE_INVALIDATION(*element.parentElement(), *invalidationData->siblings(), classChange, className);
+            TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->siblings(), classChange, className);
             invalidationLists.siblings.append(invalidationData->siblings());
         }
     }
 }
 
 void RuleFeatureSet::collectInvalidationSetsForId(InvalidationLists& invalidationLists, Element& element, const AtomicString& id) const
 {
     if (RefPtrWillBeRawPtr<InvalidationData> invalidationData = m_idInvalidationSets.get(id)) {
         if (invalidationData->descendants()) {
             TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->descendants(), idChange, id);
             invalidationLists.descendants.append(invalidationData->descendants());
         }
         if (invalidationData->siblings()) {
-            if (element.parentElement())
-                TRACE_SCHEDULE_STYLE_INVALIDATION(*element.parentElement(), *invalidationData->siblings(), idChange, id);
+            TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->siblings(), idChange, id);
             invalidationLists.siblings.append(invalidationData->siblings());
         }
     }
 }
 
 void RuleFeatureSet::collectInvalidationSetsForAttribute(InvalidationLists& invalidationLists, Element& element, const QualifiedName& attributeName) const
 {
     if (RefPtrWillBeRawPtr<InvalidationData> invalidationData = m_attributeInvalidationSets.get(attributeName.localName())) {
         if (invalidationData->descendants()) {
             TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->descendants(), attributeChange, attributeName);
             invalidationLists.descendants.append(invalidationData->descendants());
         }
         if (invalidationData->siblings()) {
-            if (element.parentElement())
-                TRACE_SCHEDULE_STYLE_INVALIDATION(*element.parentElement(), *invalidationData->siblings(), attributeChange, attributeName);
+            TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->siblings(), attributeChange, attributeName);
             invalidationLists.siblings.append(invalidationData->siblings());
         }
     }
 }
 
 void RuleFeatureSet::collectInvalidationSetsForPseudoClass(InvalidationLists& invalidationLists, Element& element, CSSSelector::PseudoType pseudo) const
 {
     if (RefPtrWillBeRawPtr<InvalidationData> invalidationData = m_pseudoInvalidationSets.get(pseudo)) {
         if (invalidationData->descendants()) {
             TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->descendants(), pseudoChange, pseudo);
             invalidationLists.descendants.append(invalidationData->descendants());
         }
         if (invalidationData->siblings()) {
-            if (element.parentElement())
-                TRACE_SCHEDULE_STYLE_INVALIDATION(*element.parentElement(), *invalidationData->siblings(), pseudoChange, pseudo);
+            TRACE_SCHEDULE_STYLE_INVALIDATION(element, *invalidationData->siblings(), pseudoChange, pseudo);
             invalidationLists.siblings.append(invalidationData->siblings());
         }
     }
 }
 
 DEFINE_TRACE(RuleFeatureSet)
 {
 #if ENABLE(OILPAN)
     visitor->trace(siblingRules);
     visitor->trace(uncommonAttributeRules);
 #endif
 }
 
 } // namespace blink