Use invalidation sets for fullscreen pseudos.

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 144 matching lines @@
     void updateGenericFontFamilySettings();
 
     void didDetach();
     bool shouldClearResolver() const;
     void resolverChanged(StyleResolverUpdateMode);
 
     PassRefPtrWillBeRawPtr<CSSStyleSheet> createSheet(Element*, const String& text, TextPosition startPosition);
     void removeSheet(StyleSheetContents*);
 
     void collectScopedStyleFeaturesTo(RuleFeatureSet&) const;
+    void ensureFullscreenUAStyle();
 
     void platformColorsChanged();
 
     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&);
 
     unsigned styleForElementCount() const { return m_styleForElementCount; }
@@ skipping 86 matching lines @@
 
     OwnPtr<StyleResolverStats> m_styleResolverStats;
     unsigned m_styleForElementCount = 0;
 
     friend class StyleEngineTest;
 };
 
 } // namespace blink
 
 #endif