--- a/dom/base/DOMError.h
+++ b/dom/base/DOMError.h
@@ -69,22 +69,16 @@ public:
   {
     aRetval = mName;
   }
 
   void GetMessage(nsString& aRetval) const
   {
     aRetval = mMessage;
   }
-
-  void Init(const nsAString& aName, const nsAString& aMessage)
-  {
-    mName = aName;
-    mMessage = aMessage;
-  }
 };
 
 NS_DEFINE_STATIC_IID_ACCESSOR(DOMError, DOMERROR_IID)
 
 } // namespace dom
 } // namespace mozilla
 
 #endif // mozilla_dom_domerror_h__

--- a/dom/webidl/DOMError.webidl
+++ b/dom/webidl/DOMError.webidl
@@ -12,12 +12,9 @@
 
 [Constructor(DOMString name, optional DOMString message = "")]
 interface DOMError {
   [Constant]
   readonly attribute DOMString name;
 
   [Constant]
   readonly attribute DOMString message;
-
-  [ChromeOnly]
-  void init(DOMString name, optional DOMString message = "");
 };