Move rolling back badly parsed property to CSSPropertyParser::parseValue

Source/core/css/parser/CSSPropertyParser.cpp

Index: Source/core/css/parser/CSSPropertyParser.cpp
diff --git a/Source/core/css/parser/CSSPropertyParser.cpp b/Source/core/css/parser/CSSPropertyParser.cpp
index ce1cf8d1247902b8c16b7aaf9267437e21f48118..7c87e4d8ff0113e5722eadc072bd2242467b5014 100644
--- a/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/Source/core/css/parser/CSSPropertyParser.cpp
@@ -120,6 +120,8 @@ bool CSSPropertyParser::parseValue(CSSPropertyID property, bool important,
     CSSParserValueList* valueList, const CSSParserContext& context, bool inViewport,
     WillBeHeapVector<CSSProperty, 256>& parsedProperties, CSSRuleSourceData::Type ruleType)
 {
+    int parsedPropertiesSize = parsedProperties.size();
+
     CSSPropertyParser parser(valueList, context, inViewport, parsedProperties, ruleType);
     bool parseSuccess = parser.parseValue(property, important);
 
@@ -127,6 +129,9 @@ bool CSSPropertyParser::parseValue(CSSPropertyID property, bool important,
     if (parseSuccess && context.useCounter())
         context.useCounter()->count(context, property);
 
+    if (!parseSuccess)
+        parser.rollbackLastProperties(parsedProperties.size() - parsedPropertiesSize);
+
     return parseSuccess;
 }