Refactor StyleInvalidator to encapsulate all style invalidation state.

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1066 matching lines @@
     StyleResolver* styleResolver = document().styleResolver();
     bool testShouldInvalidateStyle = inActiveDocument() && styleResolver && styleChangeType() < SubtreeStyleChange;
 
     ASSERT(elementData());
     if (classStringHasClassName(newClassString)) {
         const bool shouldFoldCase = document().inQuirksMode();
         const SpaceSplitString oldClasses = elementData()->classNames();
         elementData()->setClass(newClassString, shouldFoldCase);
         const SpaceSplitString& newClasses = elementData()->classNames();
         if (testShouldInvalidateStyle)
-            styleResolver->ensureUpdatedRuleFeatureSet().scheduleStyleInvalidationForClassChange(oldClasses, newClasses, this);
+            styleResolver->ensureUpdatedRuleFeatureSet().scheduleStyleInvalidationForClassChange(oldClasses, newClasses, *this);
     } else {
         const SpaceSplitString& oldClasses = elementData()->classNames();
         if (testShouldInvalidateStyle)
-            styleResolver->ensureUpdatedRuleFeatureSet().scheduleStyleInvalidationForClassChange(oldClasses, this);
+            styleResolver->ensureUpdatedRuleFeatureSet().scheduleStyleInvalidationForClassChange(oldClasses, *this);
         elementData()->clearClass();
     }
 
     if (hasRareData())
         elementRareData()->clearClassListValueForQuirksMode();
 }
 
 bool Element::shouldInvalidateDistributionWhenAttributeChanged(ElementShadow* elementShadow, const QualifiedName& name, const AtomicString& newValue)
 {
     ASSERT(elementShadow);
@@ skipping 1766 matching lines @@
     } else if (name == HTMLNames::nameAttr) {
         updateName(oldValue, newValue);
     } else if (name == HTMLNames::forAttr && isHTMLLabelElement(*this)) {
         TreeScope& scope = treeScope();
         if (scope.shouldCacheLabelsByForAttribute())
             updateLabel(scope, oldValue, newValue);
     }
 
     if (oldValue != newValue) {
         if (inActiveDocument())
-            document().ensureStyleResolver().ensureUpdatedRuleFeatureSet().scheduleStyleInvalidationForAttributeChange(name, this);
+            document().ensureStyleResolver().ensureUpdatedRuleFeatureSet().scheduleStyleInvalidationForAttributeChange(name, *this);
 
         if (isUpgradedCustomElement())
             CustomElement::attributeDidChange(this, name.localName(), oldValue, newValue);
     }
 
     if (OwnPtr<MutationObserverInterestGroup> recipients = MutationObserverInterestGroup::createForAttributesMutation(*this, name))
         recipients->enqueueMutationRecord(MutationRecord::createAttributes(this, name, oldValue));
 
     InspectorInstrumentation::willModifyDOMAttr(this, oldValue, newValue);
 }
@@ skipping 475 matching lines @@
         || isHTMLObjectElement(*this)
         || isHTMLAppletElement(*this)
         || isHTMLCanvasElement(*this))
         return false;
     if (FullscreenElementStack::isActiveFullScreenElement(this))
         return false;
     return true;
 }
 
 } // namespace WebCore