Don't pretend we support SharedArrayBuffer.

1 files changed, 0 insertions, 9 deletions

diff --git a/components/script/script_runtime.rs b/components/script/script_runtime.rs
index 4cf2055c649..dc51330cf91 100644
--- a/components/script/script_runtime.rs
+++ b/components/script/script_runtime.rs
@@ -45,7 +45,6 @@ use js::jsapi::ContextOptionsRef;
 use js::jsapi::GetPromiseUserInputEventHandlingState;
 use js::jsapi::InitConsumeStreamCallback;
 use js::jsapi::InitDispatchToEventLoop;
-use js::jsapi::JS_SetFutexCanWait;
 use js::jsapi::MimeType;
 use js::jsapi::PromiseUserInputEventHandlingState;
 use js::jsapi::StreamConsumer as JSStreamConsumer;
@@ -451,14 +450,6 @@ unsafe fn new_rt_and_cx_with_parent(
     let (cx, runtime) = if let Some(parent) = parent {
         let runtime = RustRuntime::create_with_parent(parent);
         let cx = runtime.cx();
-
-        // Note: this enables blocking on an Atomics.wait,
-        // which should only be enabled for an agent whose [[CanBlock]] is true.
-        // Currently only a dedicated worker agent uses a parent,
-        // and this agent can block.
-        // See https://html.spec.whatwg.org/multipage/#integration-with-the-javascript-agent-cluster-formalism
-        JS_SetFutexCanWait(cx);
-
         (cx, runtime)
     } else {
         let runtime = RustRuntime::new(JS_ENGINE.lock().unwrap().as_ref().unwrap().clone());