Make workers' interrupt_callback use GlobalScope

1 files changed, 4 insertions, 6 deletions

diff --git a/components/script/dom/serviceworkerglobalscope.rs b/components/script/dom/serviceworkerglobalscope.rs
index 62037763a6e..c5f993fba02 100644
--- a/components/script/dom/serviceworkerglobalscope.rs
+++ b/components/script/dom/serviceworkerglobalscope.rs
@@ -8,7 +8,7 @@ use dom::abstractworker::WorkerScriptMsg;
 use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::codegen::Bindings::ServiceWorkerGlobalScopeBinding;
 use dom::bindings::codegen::Bindings::ServiceWorkerGlobalScopeBinding::ServiceWorkerGlobalScopeMethods;
-use dom::bindings::global::{GlobalRef, global_root_from_context};
+use dom::bindings::global::global_scope_from_context;
 use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{Root, RootCollection};
 use dom::bindings::reflector::Reflectable;
@@ -310,11 +310,9 @@ impl ServiceWorkerGlobalScope {
 
 #[allow(unsafe_code)]
 unsafe extern "C" fn interrupt_callback(cx: *mut JSContext) -> bool {
-    let global = global_root_from_context(cx);
-    let worker = match global.r() {
-        GlobalRef::Worker(w) => w,
-        _ => panic!("global for worker is not a worker scope")
-    };
+    let worker =
+        Root::downcast::<WorkerGlobalScope>(global_scope_from_context(cx))
+            .expect("global is not a worker scope");
     assert!(worker.is::<ServiceWorkerGlobalScope>());
 
     // A false response causes the script to terminate