1 files changed, 13 insertions, 0 deletions
diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp
index 6a819818c..c53b3d834 100644
--- a/dom/base/nsContentUtils.cpp
+++ b/dom/base/nsContentUtils.cpp
@@ -9871,3 +9871,16 @@ nsContentUtils::IsLocalRefURL(const nsString& aString)
 
   return false;
 }
+
+/* static */ Element*
+nsContentUtils::GetClosestNonNativeAnonymousAncestor(Element* aElement)
+{
+  MOZ_ASSERT(aElement);
+  MOZ_ASSERT(aElement->IsNativeAnonymous());
+
+  Element* e = aElement;
+  while (e && e->IsNativeAnonymous()) {
+    e = e->GetParentElement();
+  }
+  return e;
+}