Remove CSS Shapes runtime flag

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 3b91cb6a1a777a5ff7a20f110313673470461037..106ab6bf1c7a71c428a476a2e7d595b9b65f7fbd 100644
--- a/Source/core/css/parser/CSSPropertyParser.cpp
+++ b/Source/core/css/parser/CSSPropertyParser.cpp
@@ -1484,10 +1484,10 @@ bool CSSPropertyParser::parseValue(CSSPropertyID propId, bool important)
         parsedValue = parseShapeProperty(propId);
         break;
     case CSSPropertyShapeMargin:
-        validPrimitive = (RuntimeEnabledFeatures::cssShapesEnabled() && !id && validUnit(value, FLength | FPercent | FNonNeg));
+        validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg));
         break;
     case CSSPropertyShapeImageThreshold:
-        validPrimitive = (RuntimeEnabledFeatures::cssShapesEnabled() && !id && validUnit(value, FNumber));
+        validPrimitive = (!id && validUnit(value, FNumber));
         break;
 
     case CSSPropertyTouchAction:
@@ -4366,9 +4366,6 @@ static bool isBoxValue(CSSValueID valueId)
 
 PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseShapeProperty(CSSPropertyID propId)
 {
-    if (!RuntimeEnabledFeatures::cssShapesEnabled())
-        return nullptr;
-
     CSSParserValue* value = m_valueList->current();
     CSSValueID valueId = value->id;