Initiate webfont download right after style recalc

Source/core/css/CSSFontFaceSource.cpp

 /*
  * Copyright (C) 2007, 2008, 2010, 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 253 matching lines @@
 
 bool CSSFontFaceSource::isLocalFontAvailable(const FontDescription& fontDescription)
 {
     if (!isLocal())
         return false;
     return fontCache()->isPlatformFontAvailable(fontDescription, m_string, true);
 }
 
 void CSSFontFaceSource::willUseFontData()
 {
-    if (m_font)
-        m_font->willUseFontData();
+    if (m_face && m_font)
+        beginLoadingFontSoon();
 }
 
 void CSSFontFaceSource::beginLoadingFontSoon()
 {
     ASSERT(m_face);
     ASSERT(m_font);
     m_face->beginLoadingFontSoon(m_font.get());
 }
 
 void CSSFontFaceSource::FontLoadHistograms::loadStarted()
@@ skipping 36 matching lines @@
     if (size < 50 * 1024)
         return "WebFont.DownloadTime.1.10KBTo50KB";
     if (size < 100 * 1024)
         return "WebFont.DownloadTime.2.50KBTo100KB";
     if (size < 1024 * 1024)
         return "WebFont.DownloadTime.3.100KBTo1MB";
     return "WebFont.DownloadTime.4.Over1MB";
 }
 
 }