--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -8575,22 +8575,16 @@ nsDocument::Sanitize()
 
     nodes->Item(i)->AsElement()->GetAttr(kNameSpaceID_None,
                                          nsGkAtoms::autocomplete, value);
     if (value.LowerCaseEqualsLiteral("off"))
       form->Reset();
   }
 }
 
-struct SubDocEnumArgs
-{
-  nsIDocument::nsSubDocEnumFunc callback;
-  void *data;
-};
-
 void
 nsDocument::EnumerateSubDocuments(nsSubDocEnumFunc aCallback, void *aData)
 {
   if (!mSubDocuments) {
     return;
   }
 
   // PLDHashTable::Iterator can't handle modifications while iterating so we