1 files changed, 7 insertions, 0 deletions
diff --git a/layout/style/nsComputedDOMStyle.h b/layout/style/nsComputedDOMStyle.h
index 79c7ed519..38a61e23c 100644
--- a/layout/style/nsComputedDOMStyle.h
+++ b/layout/style/nsComputedDOMStyle.h
@@ -27,6 +27,7 @@
 
 namespace mozilla {
 namespace dom {
+class DocGroup;
 class Element;
 } // namespace dom
 struct ComputedGridTrackInfo;
@@ -84,6 +85,11 @@ public:
     return mElement;
   }
 
+  virtual mozilla::dom::DocGroup* GetDocGroup() const override
+  {
+    return mElement ? mElement->GetDocGroup() : nullptr;
+  }
+
   static already_AddRefed<nsStyleContext>
   GetStyleContextForElement(mozilla::dom::Element* aElement, nsIAtom* aPseudo,
                             nsIPresShell* aPresShell,
@@ -486,6 +492,7 @@ private:
   already_AddRefed<CSSValue> DoGetCursor();
   already_AddRefed<CSSValue> DoGetForceBrokenImageIcon();
   already_AddRefed<CSSValue> DoGetIMEMode();
+  already_AddRefed<CSSValue> DoGetScrollbarWidth();
   already_AddRefed<CSSValue> DoGetUserFocus();
   already_AddRefed<CSSValue> DoGetUserInput();
   already_AddRefed<CSSValue> DoGetUserModify();