Make CSSParserMode parameter not optional for MutableStylePropertySet::create()

Source/core/css/parser/CSSParser.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 "config.h"
 #include "core/css/parser/CSSParser.h"
 
 #include "core/css/CSSKeyframeRule.h"
 #include "core/css/StyleColor.h"
 #include "core/css/StylePropertySet.h"
@@ skipping 60 matching lines @@
 {
     return CSSParserImpl::parseValue(declaration, unresolvedProperty, string, important, context);
 }
 
 PassRefPtrWillBeRawPtr<CSSValue> CSSParser::parseSingleValue(CSSPropertyID propertyID, const String& string, const CSSParserContext& context)
 {
     if (string.isEmpty())
         return nullptr;
     if (RefPtrWillBeRawPtr<CSSValue> value = CSSParserFastPaths::maybeParseValue(propertyID, string, context.mode()))
         return value;
-    RefPtrWillBeRawPtr<MutableStylePropertySet> stylePropertySet = MutableStylePropertySet::create();
+    RefPtrWillBeRawPtr<MutableStylePropertySet> stylePropertySet = MutableStylePropertySet::create(HTMLQuirksMode);
     bool changed = parseValue(stylePropertySet.get(), propertyID, string, false, context);
     ASSERT_UNUSED(changed, changed == stylePropertySet->hasProperty(propertyID));
     return stylePropertySet->getPropertyCSSValue(propertyID);
 }
 
 PassRefPtrWillBeRawPtr<ImmutableStylePropertySet> CSSParser::parseInlineStyleDeclaration(const String& styleString, Element* element)
 {
     return CSSParserImpl::parseInlineStyleDeclaration(styleString, element);
 }
 
@@ skipping 65 matching lines @@
     builder.appendLiteral(" : ");
     builder.append(propertyValue);
     builder.appendLiteral("; }");
     RefPtrWillBeRawPtr<StyleRuleBase> rule = parseRule(context, nullptr, builder.toString());
     if (!rule || !rule->isFontFaceRule())
         return nullptr;
     return toStyleRuleFontFace(rule.get())->properties().getPropertyCSSValue(propertyID);
 }
 
 } // namespace blink