Implements CSSPropertyAPI for the font-variation-settings property.

third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp

Index: third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
index c1f9099aa4cf6269c3de013198897f7ace6e5d74..0b29379c37b8b4e2d9f3464b412d8c2dc8de136b 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp
@@ -349,45 +349,6 @@ static CSSValue* consumeFontFeatureSettings(CSSParserTokenRange& range) {
   return settings;
 }
 
-static CSSFontVariationValue* consumeFontVariationTag(
-    CSSParserTokenRange& range) {
-  // Feature tag name consists of 4-letter characters.
-  static const unsigned tagNameLength = 4;
-
-  const CSSParserToken& token = range.consumeIncludingWhitespace();
-  // Feature tag name comes first
-  if (token.type() != StringToken)
-    return nullptr;
-  if (token.value().length() != tagNameLength)
-    return nullptr;
-  AtomicString tag = token.value().toAtomicString();
-  for (unsigned i = 0; i < tagNameLength; ++i) {
-    // Limits the range of characters to 0x20-0x7E, following the tag name rules
-    // defined in the OpenType specification.
-    UChar character = tag[i];
-    if (character < 0x20 || character > 0x7E)
-      return nullptr;
-  }
-
-  double tagValue = 0;
-  if (!consumeNumberRaw(range, tagValue))
-    return nullptr;
-  return CSSFontVariationValue::create(tag, clampTo<float>(tagValue));
-}
-
-static CSSValue* consumeFontVariationSettings(CSSParserTokenRange& range) {
-  if (range.peek().id() == CSSValueNormal)
-    return consumeIdent(range);
-  CSSValueList* variationSettings = CSSValueList::createCommaSeparated();
-  do {
-    CSSFontVariationValue* fontVariationValue = consumeFontVariationTag(range);
-    if (!fontVariationValue)
-      return nullptr;
-    variationSettings->append(*fontVariationValue);
-  } while (consumeCommaIncludingWhitespace(range));
-  return variationSettings;
-}
-
 static CSSValue* consumePage(CSSParserTokenRange& range) {
   if (range.peek().id() == CSSValueAuto)
     return consumeIdent(range);
@@ -3429,9 +3390,6 @@ const CSSValue* CSSPropertyParser::parseSingleValue(
       return consumeFontFeatureSettings(m_range);
     case CSSPropertyFontFamily:
       return consumeFontFamily(m_range);
-    case CSSPropertyFontVariationSettings:
-      DCHECK(RuntimeEnabledFeatures::cssVariableFontsEnabled());
-      return consumeFontVariationSettings(m_range);
     case CSSPropertyFontWeight:
       return consumeFontWeight(m_range);
     case CSSPropertyLetterSpacing: