Remove FontDescription::isSpecifiedFont.

Source/platform/fonts/FontDescription.cpp

 /*
  * Copyright (C) 2007 Nicholas Shanks <contact@nickshanks.com>
  * 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.
@@ skipping 24 matching lines @@
 #include "wtf/text/StringHash.h"
 
 namespace WebCore {
 
 struct SameSizeAsFontDescription {
     FontFamily familyList;
     RefPtr<FontFeatureSettings> m_featureSettings;
     float sizes[4];
     // FXIME: Make them fit into one word.
     uint32_t bitfields;
-    uint32_t bitfields2 : 8;
+    uint32_t bitfields2 : 7;
 };
 
 COMPILE_ASSERT(sizeof(FontDescription) == sizeof(SameSizeAsFontDescription), FontDescription_should_stay_small);
 
 TypesettingFeatures FontDescription::s_defaultTypesettingFeatures = 0;
 
 bool FontDescription::s_useSubpixelTextPositioning = false;
 
 FontWeight FontDescription::lighterWeight(void) const
 {
@@ skipping 138 matching lines @@
     }
 
     if (discretionaryLigaturesState() == FontDescription::EnabledLigaturesState
         || historicalLigaturesState() == FontDescription::EnabledLigaturesState
         || contextualLigaturesState() == FontDescription::EnabledLigaturesState) {
         m_typesettingFeatures |= WebCore::Ligatures;
     }
 }
 
 } // namespace WebCore