Migrate WaitableEvent to enum-based constructor in media/

media/cast/test/utility/in_process_receiver.cc

Index: media/cast/test/utility/in_process_receiver.cc
diff --git a/media/cast/test/utility/in_process_receiver.cc b/media/cast/test/utility/in_process_receiver.cc
index 7b66d7ec834600676383a82eda08ef386fe65d2a..25a926ef3d22a86cafe586fe4bf78f9e60b6fd15 100644
--- a/media/cast/test/utility/in_process_receiver.cc
+++ b/media/cast/test/utility/in_process_receiver.cc
@@ -62,7 +62,8 @@ void InProcessReceiver::Start() {
 }
 
 void InProcessReceiver::Stop() {
-  base::WaitableEvent event(false, false);
+  base::WaitableEvent event(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+                            base::WaitableEvent::InitialState::NOT_SIGNALED);
   if (cast_environment_->CurrentlyOn(CastEnvironment::MAIN)) {
     StopOnMainThread(&event);
   } else {