Implement parseShorthand API for shorthand properties, "overflow", "font" and "font-variant"

third_party/WebKit/Source/core/css/properties/CSSPropertyFontUtils.cpp

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/properties/CSSPropertyFontUtils.h"
 
 #include "core/css/CSSFontFamilyValue.h"
 #include "core/css/CSSFontFeatureValue.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSValueList.h"
@@ skipping 143 matching lines @@
     tag_value = clampTo<int>(range.ConsumeIncludingWhitespace().NumericValue());
     if (tag_value < 0)
       return nullptr;
   } else if (range.Peek().Id() == CSSValueOn ||
              range.Peek().Id() == CSSValueOff) {
     tag_value = range.ConsumeIncludingWhitespace().Id() == CSSValueOn;
   }
   return CSSFontFeatureValue::Create(tag, tag_value);
 }
 
+CSSIdentifierValue* CSSPropertyFontUtils::ConsumeFontVariantCSS21(
+    CSSParserTokenRange& range) {
+  return CSSPropertyParserHelpers::ConsumeIdent<CSSValueNormal,
+                                                CSSValueSmallCaps>(range);
+}
+
 }  // namespace blink