Migrate WaitableEvent to enum-based constructor in media/

media/blink/webmediaplayer_impl.cc

Index: media/blink/webmediaplayer_impl.cc
diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
index 0b6354a9f296e6f22c4cd2ec20ff7793d48f53c0..ece50c04e5ec35148a9c09fae08022fd2d364f3b 100644
--- a/media/blink/webmediaplayer_impl.cc
+++ b/media/blink/webmediaplayer_impl.cc
@@ -1391,7 +1391,8 @@ WebMediaPlayerImpl::GetCurrentFrameFromCompositor() {
   // Use a posted task and waitable event instead of a lock otherwise
   // WebGL/Canvas can see different content than what the compositor is seeing.
   scoped_refptr<VideoFrame> video_frame;
-  base::WaitableEvent event(false, false);
+  base::WaitableEvent event(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+                            base::WaitableEvent::InitialState::NOT_SIGNALED);
   compositor_task_runner_->PostTask(FROM_HERE,
                                     base::Bind(&GetCurrentFrameAndSignal,
                                                base::Unretained(compositor_),