Allow custom property variant of setProperty to find existing references

third_party/WebKit/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 227 matching lines @@
 
 private:
     explicit MutableStylePropertySet(CSSParserMode);
     explicit MutableStylePropertySet(const StylePropertySet&);
     MutableStylePropertySet(const CSSProperty* properties, unsigned count);
 
     bool removePropertyAtIndex(int, String* returnText);
 
     bool removeShorthandProperty(CSSPropertyID);
     bool removeShorthandProperty(const AtomicString& customPropertyName) { return false; }
-    CSSProperty* findCSSPropertyWithID(CSSPropertyID);
+    CSSProperty* findCSSPropertyWithID(CSSPropertyID, const AtomicString& customPropertyName = nullAtom);
     OwnPtrWillBeMember<PropertySetCSSStyleDeclaration> m_cssomWrapper;
 
     friend class StylePropertySet;
 
     WillBeHeapVector<CSSProperty, 4> m_propertyVector;
 };
 
 DEFINE_TYPE_CASTS(MutableStylePropertySet, StylePropertySet, set, set->isMutable(), set.isMutable());
 
 inline MutableStylePropertySet* toMutableStylePropertySet(const RefPtrWillBeRawPtr<StylePropertySet>& set)
@@ skipping 54 matching lines @@
 inline int StylePropertySet::findPropertyIndex(T property) const
 {
     if (m_isMutable)
         return toMutableStylePropertySet(this)->findPropertyIndex(property);
     return toImmutableStylePropertySet(this)->findPropertyIndex(property);
 }
 
 } // namespace blink
 
 #endif // StylePropertySet_h