| Index: Source/core/css/CSSStyleDeclaration.idl
 | 
| diff --git a/Source/core/css/CSSStyleDeclaration.idl b/Source/core/css/CSSStyleDeclaration.idl
 | 
| index 96cc639375b4ef62e7da6428acab0ddcb03a73db..1fc7e9c6abf3ce95ab3d65efe40b3af68a2f0647 100644
 | 
| --- a/Source/core/css/CSSStyleDeclaration.idl
 | 
| +++ b/Source/core/css/CSSStyleDeclaration.idl
 | 
| @@ -30,7 +30,7 @@
 | 
|      [TreatReturnedNullStringAs=Null] DOMString          getPropertyPriority([Default=Undefined] optional DOMString propertyName);
 | 
|       [RaisesException] void setProperty([Default=Undefined] optional DOMString propertyName,
 | 
|                                      [TreatNullAs=NullString,Default=Undefined] optional DOMString value,
 | 
| -                                    [TreatNullAs=NullString,Default=NullString] optional DOMString priority);
 | 
| +                                    [TreatNullAs=NullString] optional DOMString priority = null);
 | 
|  
 | 
|      readonly attribute unsigned long    length;
 | 
|      getter DOMString          item([Default=Undefined] optional unsigned long index);
 | 
| 
 |