Provide a CSSParserContext to CSSSyntaxDescriptor

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/parser/CSSParserImpl.h"
 
 #include "core/css/CSSCustomIdentValue.h"
 #include "core/css/CSSCustomPropertyDeclaration.h"
 #include "core/css/CSSKeyframesRule.h"
 #include "core/css/CSSStyleSheet.h"
@@ skipping 71 matching lines @@
   bool didChange = false;
   if (!parser.m_parsedProperties.isEmpty()) {
     const CSSCustomPropertyDeclaration* parsedDeclaration =
         toCSSCustomPropertyDeclaration(parser.m_parsedProperties[0].value());
     if (parsedDeclaration->value() && registry) {
       const PropertyRegistry::Registration* registration =
           registry->registration(propertyName);
       // TODO(timloh): This is a bit wasteful, we parse the registered property
       // to validate but throw away the result.
       if (registration &&
-          !registration->syntax().parse(tokenizer.tokenRange(),
+          !registration->syntax().parse(tokenizer.tokenRange(), context,
                                         isAnimationTainted)) {
         return MutableStylePropertySet::SetResult{didParse, didChange};
       }
     }
     didParse = true;
     didChange = declaration->addParsedProperties(parser.m_parsedProperties);
   }
   return MutableStylePropertySet::SetResult{didParse, didChange};
 }
 
@@ skipping 876 matching lines @@
     else
       return nullptr;  // Parser error, invalid value in keyframe selector
     if (range.atEnd())
       return result;
     if (range.consume().type() != CommaToken)
       return nullptr;  // Parser error
   }
 }
 
 }  // namespace blink