Make text visible when font loading takes longer than 3 seconds

Source/core/css/CSSFontFaceSource.h

 /*
  * Copyright (C) 2007, 2008, 2011 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 41 matching lines @@
     bool isLocal() const;
     bool isLoading() const;
     bool isLoaded() const;
     bool isValid() const;
 
     FontResource* resource() { return m_font.get(); }
     void setFontFace(CSSFontFace* face) { m_face = face; }
 
     virtual void didStartFontLoad(FontResource*) OVERRIDE;
     virtual void fontLoaded(FontResource*) OVERRIDE;
+    virtual void fontLoadWaitLimitExceeded(FontResource*) OVERRIDE;
 
     PassRefPtr<SimpleFontData> getFontData(const FontDescription&);
 
 #if ENABLE(SVG_FONTS)
     SVGFontFaceElement* svgFontFaceElement() const;
     void setSVGFontFaceElement(PassRefPtr<SVGFontFaceElement>);
     bool isSVGFontFaceSource() const;
     void setHasExternalSVGFont(bool value) { m_hasExternalSVGFont = value; }
 #endif
 
@@ skipping 27 matching lines @@
 #if ENABLE(SVG_FONTS)
     RefPtr<SVGFontFaceElement> m_svgFontFaceElement;
     RefPtr<SVGFontElement> m_externalSVGFontElement;
     bool m_hasExternalSVGFont;
 #endif
 };
 
 }
 
 #endif