Auto merge of #22353 - jdm:runtime-parent, r=nox

Update rust-mozjs

These changes adjust our uses of the rust-mozjs APIs to accommodate the changes in https://github.com/servo/rust-mozjs/pull/450.

---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #22342.
- [x] There are tests for these changes

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1 files changed, 11 insertions, 1 deletions

diff --git a/components/script/dom/globalscope.rs b/components/script/dom/globalscope.rs
index 4aa3a29cea6..91112299034 100644
--- a/components/script/dom/globalscope.rs
+++ b/components/script/dom/globalscope.rs
@@ -47,7 +47,7 @@ use js::jsapi::{HandleObject, Heap};
 use js::jsapi::{JSAutoCompartment, JSContext};
 use js::panic::maybe_resume_unwind;
 use js::rust::wrappers::Evaluate2;
-use js::rust::{get_object_class, CompileOptionsWrapper, Runtime};
+use js::rust::{get_object_class, CompileOptionsWrapper, ParentRuntime, Runtime};
 use js::rust::{HandleValue, MutableHandleValue};
 use js::{JSCLASS_IS_DOMJSCLASS, JSCLASS_IS_GLOBAL};
 use msg::constellation_msg::PipelineId;
@@ -711,6 +711,16 @@ impl GlobalScope {
         unreachable!();
     }
 
+    pub fn runtime_handle(&self) -> ParentRuntime {
+        if self.is::<Window>() {
+            ScriptThread::runtime_handle()
+        } else if let Some(worker) = self.downcast::<WorkerGlobalScope>() {
+            worker.runtime_handle()
+        } else {
+            unreachable!()
+        }
+    }
+
     /// Returns the ["current"] global object.
     ///
     /// ["current"]: https://html.spec.whatwg.org/multipage/#current