Properties labelled !important must be ignored in keyframes

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 a7170fdd2247855c091cedce0ce9daf81274f9ac..95eb49ac62a75df160a283181e589bd6c918086d 100644
--- a/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/Source/core/css/parser/CSSPropertyParser.cpp
@@ -110,7 +110,7 @@ bool CSSPropertyParser::parseValue(CSSPropertyID unresolvedProperty, bool import
         parseSuccess = (RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(context.mode()))
             && parser.parseViewportProperty(resolvedProperty, important);
     } else if (ruleType == StyleRule::FontFace) {
-        parseSuccess = !important && parser.parseFontFaceDescriptor(resolvedProperty);
+        parseSuccess = parser.parseFontFaceDescriptor(resolvedProperty);
     } else {
         parseSuccess = parser.parseValue(unresolvedProperty, important);
     }