Reland "Add plumbing for font-stretch"

Source/core/css/FontFaceSet.cpp

 /*
  * Copyright (C) 2013 Google 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 515 matching lines @@
     defaultFontDescription.setSpecifiedSize(defaultFontSize);
     defaultFontDescription.setComputedSize(defaultFontSize);
 
     style->setFontDescription(defaultFontDescription);
 
     style->font().update(style->font().fontSelector());
 
     // Now map the font property longhands into the style.
     CSSPropertyValue properties[] = {
         CSSPropertyValue(CSSPropertyFontFamily, *parsedStyle),
+        CSSPropertyValue(CSSPropertyFontStretch, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontStyle, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontVariant, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontWeight, *parsedStyle),
         CSSPropertyValue(CSSPropertyFontSize, *parsedStyle),
         CSSPropertyValue(CSSPropertyLineHeight, *parsedStyle),
     };
     StyleResolver& styleResolver = document()->ensureStyleResolver();
     styleResolver.applyPropertiesToStyle(properties, WTF_ARRAY_LENGTH(properties), style.get());
 
     font = style->font();
@@ skipping 51 matching lines @@
     visitor->trace(m_loadingFonts);
     visitor->trace(m_loadedFonts);
     visitor->trace(m_failedFonts);
     visitor->trace(m_nonCSSConnectedFaces);
     DocumentSupplement::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
 }
 #endif
 
 } // namespace blink