InlinedVisitor: Migrate dom to use inlined tracing

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 158 matching lines @@
 
     void markDocumentDirty();
 
     PassRefPtrWillBeRawPtr<CSSStyleSheet> createSheet(Element*, const String& text, TextPosition startPosition, bool createdByParser);
     void removeSheet(StyleSheetContents*);
 
     void collectScopedStyleFeaturesTo(RuleFeatureSet&) const;
 
     void platformColorsChanged();
 
-    virtual void trace(Visitor*) override;
+    DECLARE_VIRTUAL_TRACE();
 
 private:
     // CSSFontSelectorClient implementation.
     virtual void fontsNeedUpdate(CSSFontSelector*) override;
 
 private:
     StyleEngine(Document&);
 
     TreeScopeStyleSheetCollection* ensureStyleSheetCollectionFor(TreeScope&);
     TreeScopeStyleSheetCollection* styleSheetCollectionFor(TreeScope&);
@@ skipping 35 matching lines @@
         {
             m_treeScopes.clear();
             m_hash.clear();
         }
 
         size_t size() const { return m_treeScopes.size(); }
 
         TreeScope* operator[](size_t i) { return m_treeScopes[i]; }
         const TreeScope* operator[](size_t i) const { return m_treeScopes[i]; }
 
-        void trace(Visitor*);
+        DECLARE_TRACE();
 
     private:
         WillBeHeapVector<RawPtrWillBeMember<TreeScope>, 16> m_treeScopes;
         UnorderedTreeScopeSet m_hash;
     };
 
     static void insertTreeScopeInDocumentOrder(OrderedTreeScopeSet&, TreeScope*);
     void clearMediaQueryRuleSetOnTreeScopeStyleSheets(UnorderedTreeScopeSet::iterator begin, UnorderedTreeScopeSet::iterator end);
 
     void createResolver();
@@ skipping 51 matching lines @@
 
     RefPtrWillBeMember<CSSFontSelector> m_fontSelector;
 
     WillBeHeapHashMap<AtomicString, RawPtrWillBeMember<StyleSheetContents> > m_textToSheetCache;
     WillBeHeapHashMap<RawPtrWillBeMember<StyleSheetContents>, AtomicString> m_sheetToTextCache;
 };
 
 }
 
 #endif