rtc::Event: Add TimeDelta support.

This CL adds TimeDelta support to the rtc::Event, and updates
the Wait implementations to work with the improved precision.

Bug: webrtc:14366
Change-Id: Iefeb638b18176a34f4ed2a5131754a7b7e6c9e99
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/272002
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Markus Handell <handellm@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37831}

rtc_base/task_queue_for_test.h

diff --git a/rtc_base/task_queue_for_test.h b/rtc_base/task_queue_for_test.h
index 616ec8e..4c7f842 100644
--- a/rtc_base/task_queue_for_test.h
+++ b/rtc_base/task_queue_for_test.h
@@ -34,8 +34,8 @@
   rtc::Event event;
   absl::Cleanup cleanup = [&event] { event.Set(); };
   task_queue->PostTask([task, cleanup = std::move(cleanup)] { task(); });
-  RTC_CHECK(event.Wait(/*give_up_after_ms=*/rtc::Event::kForever,
-                       /*warn_after_ms=*/10'000));
+  RTC_CHECK(event.Wait(/*give_up_after=*/rtc::Event::kForever,
+                       /*warn_after=*/TimeDelta::Seconds(10)));
 }
 
 class RTC_LOCKABLE TaskQueueForTest : public rtc::TaskQueue {