Initial implementation of font-size-adjust

Source/core/css/LayoutStyleCSSValueMapping.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ skipping 1537 matching lines @@
     case CSSPropertyFontFamily: {
         RefPtrWillBeRawPtr<CSSValueList> fontFamilyList = valueForFontFamily(style);
         // If there's only a single family, return that as a CSSPrimitiveValue.
         // NOTE: Gecko always returns this as a comma-separated CSSPrimitiveValue string.
         if (fontFamilyList->length() == 1)
             return fontFamilyList->item(0);
         return fontFamilyList.release();
     }
     case CSSPropertyFontSize:
         return valueForFontSize(style);
+    case CSSPropertyFontSizeAdjust:
+        if (style.hasFontSizeAdjust())
+            return cssValuePool().createValue(style.fontSizeAdjust(), CSSPrimitiveValue::CSS_NUMBER);
+        return cssValuePool().createIdentifierValue(CSSValueNone);
     case CSSPropertyFontStretch:
         return valueForFontStretch(style);
     case CSSPropertyFontStyle:
         return valueForFontStyle(style);
     case CSSPropertyFontVariant:
         return valueForFontVariant(style);
     case CSSPropertyFontWeight:
         return valueForFontWeight(style);
     case CSSPropertyWebkitFontFeatureSettings: {
         const FontFeatureSettings* featureSettings = style.fontDescription().featureSettings();
@@ skipping 996 matching lines @@
         return zoomAdjustedPixelValueForLength(svgStyle.y(), style);
 
     case CSSPropertyAll:
         return nullptr;
     }
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
 }