Migrate WaitableEvent to enum-based constructor in media/

media/audio/clockless_audio_sink.cc

Index: media/audio/clockless_audio_sink.cc
diff --git a/media/audio/clockless_audio_sink.cc b/media/audio/clockless_audio_sink.cc
index 8273dfbcf2890f5fb93915f6e456d0c406909d6b..91de5e0f5ab3994ac9e7f53f2c586dc25ececc7f 100644
--- a/media/audio/clockless_audio_sink.cc
+++ b/media/audio/clockless_audio_sink.cc
@@ -21,7 +21,9 @@ class ClocklessAudioSinkThread : public base::DelegateSimpleThread::Delegate {
                            bool hashing)
       : callback_(callback),
         audio_bus_(AudioBus::Create(params)),
-        stop_event_(new base::WaitableEvent(false, false)) {
+        stop_event_(new base::WaitableEvent(
+            base::WaitableEvent::ResetPolicy::AUTOMATIC,
+            base::WaitableEvent::InitialState::NOT_SIGNALED)) {
     if (hashing)
       audio_hash_.reset(new AudioHash());
   }