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-rw-r--r--components/script/dom/webidls/ExtendableMessageEvent.webidl4
1 files changed, 2 insertions, 2 deletions
diff --git a/components/script/dom/webidls/ExtendableMessageEvent.webidl b/components/script/dom/webidls/ExtendableMessageEvent.webidl
index e934d06b50b..d623d4cb898 100644
--- a/components/script/dom/webidls/ExtendableMessageEvent.webidl
+++ b/components/script/dom/webidls/ExtendableMessageEvent.webidl
@@ -4,10 +4,10 @@
// https://w3c.github.io/ServiceWorker/#extendablemessage-event-section
-[Constructor(DOMString type, optional ExtendableMessageEventInit eventInitDict = {}),
- Exposed=ServiceWorker,
+[Exposed=ServiceWorker,
Pref="dom.serviceworker.enabled"]
interface ExtendableMessageEvent : ExtendableEvent {
+ [Throws] constructor(DOMString type, optional ExtendableMessageEventInit eventInitDict = {});
readonly attribute any data;
readonly attribute DOMString origin;
readonly attribute DOMString lastEventId;