[Experiment] purge-and-suspend

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 165 matching lines @@
     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);
     unsigned styleForElementCount() const { return m_styleForElementCount; }
     void incStyleForElementCount() { m_styleForElementCount++; }
 
     StyleResolverStats* stats() { return m_styleResolverStats.get(); }
     void setStatsEnabled(bool);
 
+    void purgeMemory();
+
     DECLARE_VIRTUAL_TRACE();
 
     DECLARE_TRACE_WRAPPERS();
 
 private:
     // CSSFontSelectorClient implementation.
     void fontsNeedUpdate(CSSFontSelector*) override;
 
 private:
     StyleEngine(Document&);
@@ skipping 76 matching lines @@
 
     std::unique_ptr<StyleResolverStats> m_styleResolverStats;
     unsigned m_styleForElementCount = 0;
 
     friend class StyleEngineTest;
 };
 
 } // namespace blink
 
 #endif