Remove some unused functions in core

Source/core/css/CSSSegmentedFontFace.h

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 57 matching lines @@
     void match(const String&, WillBeHeapVector<RefPtrWillBeMember<FontFace> >&) const;
     void willUseFontData(const FontDescription&, UChar32);
 
     void trace(Visitor*);
 
 private:
     CSSSegmentedFontFace(CSSFontSelector*, FontTraits);
 
     void pruneTable();
     bool isValid() const;
-    bool isLoading() const;
-    bool isLoaded() const;
 
     typedef WillBeHeapListHashSet<RefPtrWillBeMember<FontFace> > FontFaceList;
 
     RawPtrWillBeMember<CSSFontSelector> m_fontSelector;
     FontTraits m_traits;
     HashMap<unsigned, RefPtr<SegmentedFontData> > m_fontDataTable;
     // All non-CSS-connected FontFaces are stored after the CSS-connected ones.
     FontFaceList m_fontFaces;
     FontFaceList::iterator m_firstNonCssConnectedFace;
 };
 
 } // namespace blink
 
 #endif // CSSSegmentedFontFace_h