Auto merge of #24758 - gterzian:impl_timer_task_source, r=nox

Implement timer-task-source, time-out service worker

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Implements the timer task-source, and folds the IPC glue-code into a single route set by the globalscope.

Also switches service worker to using a dedicated "time-out" mechanism, which previously relied on the timer mechanism(and I think didn't actually implement script timers).

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- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #24747 (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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1 files changed, 2 insertions, 0 deletions

diff --git a/components/script/task_source/mod.rs b/components/script/task_source/mod.rs
index d315b34fcae..7defd922779 100644
--- a/components/script/task_source/mod.rs
+++ b/components/script/task_source/mod.rs
@@ -10,6 +10,7 @@ pub mod networking;
 pub mod performance_timeline;
 pub mod port_message;
 pub mod remote_event;
+pub mod timer;
 pub mod user_interaction;
 pub mod websocket;
 
@@ -34,6 +35,7 @@ pub enum TaskSourceName {
     RemoteEvent,
     MediaElement,
     Websocket,
+    Timer,
 }
 
 impl TaskSourceName {