Manual refactor to enum-based WaitableEvent for remaining mac/ios files

media/audio/mac/audio_auhal_mac_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_message_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 76 matching lines @@
   stream->Close();
 }
 
 TEST_F(AUHALStreamTest, CreateOpenStartStopClose) {
   ABORT_AUDIO_TEST_IF_NOT(OutputDevicesAvailable());
 
   AudioOutputStream* stream = Create();
   EXPECT_TRUE(stream->Open());
 
   // Wait for the first two data callback from the OS.
-  base::WaitableEvent event(false, false);
+  base::WaitableEvent event(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+                            base::WaitableEvent::InitialState::NOT_SIGNALED);
   int callback_counter = 0;
   const int number_of_callbacks = 2;
   EXPECT_CALL(source_, OnMoreData(_, _, _))
       .Times(number_of_callbacks)
       .WillRepeatedly(DoAll(
           ZeroBuffer(),
           MaybeSignalEvent(&callback_counter, number_of_callbacks, &event),
           Return(0)));
   EXPECT_CALL(source_, OnError(_)).Times(0);
   stream->Start(&source_);
   event.Wait();
 
   stream->Stop();
   stream->Close();
 
   EXPECT_FALSE(log_message_.empty());
 }
 
 }  // namespace media