Remove some dead code.

sky/engine/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 32 matching lines @@
 class CSSStyleSheet;
 class Document;
 class Node;
 class RuleFeatureSet;
 class StyleRuleFontFace;
 class StyleSheetContents;
 
 class StyleEngine final : public CSSFontSelectorClient  {
     WTF_MAKE_FAST_ALLOCATED;
 public:
-    static PassOwnPtr<StyleEngine> create(Document& document) { return adoptPtr(new StyleEngine(document)); }
+    static PassOwnPtr<StyleEngine> create(Document& document)
+    {
+        return adoptPtr(new StyleEngine(document));
+    }
 
     ~StyleEngine();
 
-    void detachFromDocument();
-
     void addTreeScope(TreeScope&);
     void removeTreeScope(TreeScope&);
 
     // FIXME(sky): Remove this and ::first-line.
     bool usesFirstLineRules() const { return false; }
 
     StyleResolver& resolver() { return *m_resolver; }
 
     CSSFontSelector* fontSelector() { return m_fontSelector.get(); }
-    void clearFontCache();
-    // updateGenericFontFamilySettings is used from WebSettingsImpl.
+
     void updateGenericFontFamilySettings();
 
     void resolverChanged();
-    unsigned resolverAccessCount() const;
 
     PassRefPtr<CSSStyleSheet> createSheet(Element*, const String& text);
     void removeSheet(StyleSheetContents*);
 
 private:
     // CSSFontSelectorClient implementation.
     virtual void fontsNeedUpdate(CSSFontSelector*) override;
 
 private:
     explicit StyleEngine(Document&);
 
+    // TODO(esprehn): Need to call this after @font-face rules load.
+    void clearFontCache();
+
     void updateActiveStyleSheets();
 
     RawPtr<Document> m_document;
 
     typedef ListHashSet<TreeScope*, 16> TreeScopeSet;
     TreeScopeSet m_activeTreeScopes;
 
     OwnPtr<StyleResolver> m_resolver;
 
     RefPtr<CSSFontSelector> m_fontSelector;
 
     HashMap<AtomicString, StyleSheetContents*> m_textToSheetCache;
     HashMap<StyleSheetContents*, AtomicString> m_sheetToTextCache;
 };
 
 }
 
 #endif  // SKY_ENGINE_CORE_DOM_STYLEENGINE_H_