diff --git a/engine/core/dom/Element.idl b/engine/core/dom/Element.idl
index 6d7d122aad9..21873ee1621 100644
--- a/engine/core/dom/Element.idl
+++ b/engine/core/dom/Element.idl
@@ -24,6 +24,8 @@ interface Element : ParentNode {
   attribute long tabIndex;
   readonly attribute DOMTokenList classList;
   [RaisesException] ShadowRoot ensureShadowRoot();
+
+  ClientRect getBoundingClientRect();
   readonly attribute long offsetLeft;
   readonly attribute long offsetTop;
   readonly attribute long offsetWidth;