Migrate WaitableEvent to enum-based constructor in base/

base/posix/unix_domain_socket_linux_unittest.cc

Index: base/posix/unix_domain_socket_linux_unittest.cc
diff --git a/base/posix/unix_domain_socket_linux_unittest.cc b/base/posix/unix_domain_socket_linux_unittest.cc
index e4b63c0cd4808803f68a7fd368b48342b05cd502..3f5173cfc21c15f2c3e9870f49d4861602b0fe82 100644
--- a/base/posix/unix_domain_socket_linux_unittest.cc
+++ b/base/posix/unix_domain_socket_linux_unittest.cc
@@ -52,7 +52,8 @@ TEST(UnixDomainSocketTest, SendRecvMsgAbortOnReplyFDClose) {
   message_fds.clear();
 
   // Check that the thread didn't get blocked.
-  WaitableEvent event(false, false);
+  WaitableEvent event(WaitableEvent::ResetPolicy::AUTOMATIC,
+                      WaitableEvent::InitialState::NOT_SIGNALED);
   message_thread.task_runner()->PostTask(
       FROM_HERE, Bind(&WaitableEvent::Signal, Unretained(&event)));
   ASSERT_TRUE(event.TimedWait(TimeDelta::FromMilliseconds(5000)));