Remove CSSVariables RuntimeEnabledFeatures flag (status=stable)

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

Index: third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
diff --git a/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp b/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
index d93c45432ed3dde65bbf0bcd93442e0d0ae61f57..59c96a646cdd6bc98f2765b1a43d5e7d62918f6a 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
+++ b/third_party/WebKit/Source/core/css/parser/CSSParserImpl.cpp
@@ -766,7 +766,7 @@ void CSSParserImpl::consumeDeclaration(CSSParserTokenRange range, StyleRule::Rul
     }
 
     size_t propertiesCount = m_parsedProperties.size();
-    if (RuntimeEnabledFeatures::cssVariablesEnabled() && unresolvedProperty == CSSPropertyInvalid && CSSVariableParser::isValidVariableName(token)) {
+    if (unresolvedProperty == CSSPropertyInvalid && CSSVariableParser::isValidVariableName(token)) {
         AtomicString variableName = token.value().toAtomicString();
         consumeVariableValue(range.makeSubRange(&range.peek(), declarationValueEnd), variableName, important);
     }