Migrate WaitableEvent to enum-based constructor in media/

media/filters/vpx_video_decoder.cc

Index: media/filters/vpx_video_decoder.cc
diff --git a/media/filters/vpx_video_decoder.cc b/media/filters/vpx_video_decoder.cc
index 44e0e228d07b7f93694cc73c7f7c6a7aaef2becc..1d68d0cfc94f58b03ae44b72297a27290a6c006f 100644
--- a/media/filters/vpx_video_decoder.cc
+++ b/media/filters/vpx_video_decoder.cc
@@ -70,7 +70,8 @@ class VpxOffloadThread {
     DCHECK(thread_checker_.CalledOnValidThread());
     DCHECK(offload_thread_users_);
     DCHECK(offload_thread_.IsRunning());
-    base::WaitableEvent waiter(false, false);
+    base::WaitableEvent waiter(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+                               base::WaitableEvent::InitialState::NOT_SIGNALED);
     offload_thread_.task_runner()->PostTask(
         FROM_HERE,
         base::Bind(&base::WaitableEvent::Signal, base::Unretained(&waiter)));