Make Event's isTrusted attribute unforgeable

1 files changed, 6 insertions, 0 deletions

diff --git a/components/script/dom/messageevent.rs b/components/script/dom/messageevent.rs
index 30a674253de..f68f37a872a 100644
--- a/components/script/dom/messageevent.rs
+++ b/components/script/dom/messageevent.rs
@@ -2,6 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use dom::bindings::codegen::Bindings::MessageEventBinding;
 use dom::bindings::codegen::Bindings::MessageEventBinding::MessageEventMethods;
 use dom::bindings::error::Fallible;
@@ -99,4 +100,9 @@ impl MessageEventMethods for MessageEvent {
     fn LastEventId(&self) -> DOMString {
         self.lastEventId.clone()
     }
+
+    // https://dom.spec.whatwg.org/#dom-event-istrusted
+    fn IsTrusted(&self) -> bool {
+        self.event.IsTrusted()
+    }
 }