diff --git a/view/public/nsIView.h b/view/public/nsIView.h
index 081238a7ee79..4c07bf6880ac 100644
--- a/view/public/nsIView.h
+++ b/view/public/nsIView.h
@@ -362,20 +362,7 @@ public:
   // This is an app unit offset to add when converting view coordinates to
   // widget coordinates.  It is the offset in view coordinates from widget
   // top-left to view top-left.
-  nsPoint ViewToWidgetOffset() const {
-    nsIView* parent = reinterpret_cast<nsIView*>(mParent);
-    if (parent && parent->GetViewManager() != GetViewManager()) {
-      // The document root view's mViewToWidgetOffset is always (0,0).
-      // If it has a parent view, the parent view must be the inner view
-      // for an nsSubdocumentFrame; its top-left position in appunits
-      // is always positioned at that inner view's top-left, and its
-      // widget top-left is always positioned at that inner view's widget's
-      // top-left, so its ViewToWidgetOffset is actually the same as
-      // its parent's.
-      return parent->ViewToWidgetOffset();
-    }
-    return mViewToWidgetOffset;
-  }
+  nsPoint ViewToWidgetOffset() const { return mViewToWidgetOffset; }
 
 protected:
   friend class nsWeakView;