--- a/dom/base/ChildIterator.h
+++ b/dom/base/ChildIterator.h
@@ -200,27 +200,28 @@ public:
 #endif
 
   bool Seek(nsIContent* aChildToFind);
 
   nsIContent* GetNextChild();
   nsIContent* GetPreviousChild();
   nsIContent* Parent() const { return mOriginalContent; }
 
-private:
   enum IteratorPhase
   {
     eAtBegin,
     eAtBeforeKid,
     eAtExplicitKids,
     eAtAnonKids,
     eAtAfterKid,
     eAtEnd
   };
+  IteratorPhase Phase() const { return mPhase; }
 
+private:
   nsIContent* mOriginalContent;
 
   // mAnonKids is an array of native anonymous children, mAnonKidsIdx is index
   // in the array. If mAnonKidsIdx < mAnonKids.Length() and mPhase is
   // eAtAnonKids then the iterator points at a child at mAnonKidsIdx index. If
   // mAnonKidsIdx == mAnonKids.Length() then the iterator is somewhere after
   // the last native anon child. If mAnonKidsIdx == UINT32_MAX then the iterator
   // is somewhere before the first native anon child.