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

Source/core/css/StylePropertySet.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 168 matching lines @@
 inline const StylePropertyMetadata* ImmutableStylePropertySet::metadataArray() const
 {
     return reinterpret_cast<const StylePropertyMetadata*>(&reinterpret_cast<const char*>(&(this->m_storage))[m_arraySize * sizeof(RawPtrWillBeMember<CSSValue>)]);
 }
 
 DEFINE_TYPE_CASTS(ImmutableStylePropertySet, StylePropertySet, set, !set->isMutable(), !set.isMutable());
 
 class CORE_EXPORT MutableStylePropertySet : public StylePropertySet {
 public:
     ~MutableStylePropertySet() { }
-    static PassRefPtrWillBeRawPtr<MutableStylePropertySet> create(CSSParserMode = HTMLQuirksMode);
+    static PassRefPtrWillBeRawPtr<MutableStylePropertySet> create(CSSParserMode);
     static PassRefPtrWillBeRawPtr<MutableStylePropertySet> create(const CSSProperty* properties, unsigned count);
 
     unsigned propertyCount() const { return m_propertyVector.size(); }
 
     // Returns whether this style set was changed.
     bool addParsedProperties(const WillBeHeapVector<CSSProperty, 256>&);
     bool addRespectingCascade(const CSSProperty&);
 
     // These expand shorthand properties into multiple properties.
     bool setProperty(CSSPropertyID unresolvedProperty, const String& value, bool important = false, StyleSheetContents* contextStyleSheet = 0);
@@ skipping 91 matching lines @@
 inline int StylePropertySet::findPropertyIndex(CSSPropertyID propertyID) const
 {
     if (m_isMutable)
         return toMutableStylePropertySet(this)->findPropertyIndex(propertyID);
     return toImmutableStylePropertySet(this)->findPropertyIndex(propertyID);
 }
 
 } // namespace blink
 
 #endif // StylePropertySet_h