1 files changed, 3 insertions, 0 deletions
diff --git a/dom/base/nsRange.h b/dom/base/nsRange.h
index 30c17a254f..2c0c19edc6 100644
--- a/dom/base/nsRange.h
+++ b/dom/base/nsRange.h
@@ -26,6 +26,7 @@ namespace mozilla {
 class ErrorResult;
 namespace dom {
 struct ClientRectsAndTexts;
+class DocGroup;
 class DocumentFragment;
 class DOMRect;
 class DOMRectList;
@@ -38,6 +39,7 @@ class nsRange final : public nsIDOMRange,
                       public nsWrapperCache
 {
   typedef mozilla::ErrorResult ErrorResult;
+  typedef mozilla::dom::DocGroup DocGroup;
   typedef mozilla::dom::DOMRect DOMRect;
   typedef mozilla::dom::DOMRectList DOMRectList;
 
@@ -280,6 +282,7 @@ public:
 
   nsINode* GetParentObject() const { return mOwner; }
   virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> aGivenProto) override final;
+  DocGroup* GetDocGroup() const;
 
 private:
   // no copy's or assigns