Fix FontFaceSet state getting stuck at loading

third_party/WebKit/Source/core/css/CSSFontFace.cpp

 /*
  * 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 171 matching lines @@
 {
     ASSERT(m_fontFace);
     if (newStatus == FontFace::Error)
         m_fontFace->setError();
     else
         m_fontFace->setLoadStatus(newStatus);
 
     if (!m_segmentedFontFace)
         return;
     Document* document = m_segmentedFontFace->fontSelector()->document();
-    if (!document)
-        return;
-
-    switch (newStatus) {
-    case FontFace::Loading:
+    if (document && newStatus == FontFace::Loading)
         FontFaceSet::from(*document)->beginFontLoading(m_fontFace);
-        break;
-    case FontFace::Loaded:
-        FontFaceSet::from(*document)->fontLoaded(m_fontFace);
-        break;
-    case FontFace::Error:
-        FontFaceSet::from(*document)->loadError(m_fontFace);
-        break;
-    default:
-        break;
-    }
 }
 
 DEFINE_TRACE(CSSFontFace)
 {
     visitor->trace(m_segmentedFontFace);
     visitor->trace(m_sources);
     visitor->trace(m_fontFace);
 }
 
 } // namespace blink