Implemented scoped invalidation for added/removed RuleSets.

third_party/WebKit/Source/core/dom/StyleEngine.h

 /*
  * 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@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 162 matching lines @@
 
     void classChangedForElement(const SpaceSplitString& changedClasses, Element&);
     void classChangedForElement(const SpaceSplitString& oldClasses, const SpaceSplitString& newClasses, Element&);
     void attributeChangedForElement(const QualifiedName& attributeName, Element&);
     void idChangedForElement(const AtomicString& oldId, const AtomicString& newId, Element&);
     void pseudoStateChangedForElement(CSSSelector::PseudoType, Element&);
     void scheduleSiblingInvalidationsForElement(Element&, ContainerNode& schedulingParent, unsigned minDirectAdjacent);
     void scheduleInvalidationsForInsertedSibling(Element* beforeElement, Element& insertedElement);
     void scheduleInvalidationsForRemovedSibling(Element* beforeElement, Element& removedElement, Element& afterElement);
     void scheduleNthPseudoInvalidations(ContainerNode&);
+    void scheduleInvalidationsForRuleSets(TreeScope&, const HeapVector<Member<const RuleSet>>&);
 
     unsigned styleForElementCount() const { return m_styleForElementCount; }
     void incStyleForElementCount() { m_styleForElementCount++; }
 
     StyleResolverStats* stats() { return m_styleResolverStats.get(); }
     void setStatsEnabled(bool);
 
     DECLARE_VIRTUAL_TRACE();
 
     DECLARE_TRACE_WRAPPERS();
@@ skipping 31 matching lines @@
     }
 
     DocumentStyleSheetCollection* documentStyleSheetCollection()
     {
         return m_documentStyleSheetCollection.get();
     }
 
     void updateActiveStyleSheetsInShadow(StyleResolverUpdateMode, TreeScope*, UnorderedTreeScopeSet& treeScopesRemoved);
 
     bool shouldSkipInvalidationFor(const Element&) const;
+    void scheduleRuleSetInvalidationsForElement(Element&, const HeapVector<Member<const RuleSet>>&);
+    void invalidateSlottedElements(HTMLSlotElement&);
 
     Member<Document> m_document;
     bool m_isMaster;
 
     // Track the number of currently loading top-level stylesheets needed for layout.
     // Sheets loaded using the @import directive are not included in this count.
     // We use this count of pending sheets to detect when we can begin attaching
     // elements and when it is safe to execute scripts.
     int m_pendingScriptBlockingStylesheets = 0;
     int m_pendingRenderBlockingStylesheets = 0;
@@ skipping 33 matching lines @@
 
     std::unique_ptr<StyleResolverStats> m_styleResolverStats;
     unsigned m_styleForElementCount = 0;
 
     friend class StyleEngineTest;
 };
 
 } // namespace blink
 
 #endif