Migrate WaitableEvent to enum-based constructor in base/

base/task_scheduler/scheduler_worker_thread.cc

 // Copyright 2016 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/task_scheduler/scheduler_worker_thread.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 29 matching lines @@
     AutoSchedulerLock auto_lock(should_exit_for_testing_lock_);
     should_exit_for_testing_ = true;
   }
   WakeUp();
   PlatformThread::Join(thread_handle_);
 }
 
 SchedulerWorkerThread::SchedulerWorkerThread(ThreadPriority thread_priority,
                                              std::unique_ptr<Delegate> delegate,
                                              TaskTracker* task_tracker)
-    : wake_up_event_(false, false),
+    : wake_up_event_(WaitableEvent::ResetPolicy::AUTOMATIC,
+                     WaitableEvent::InitialState::NOT_SIGNALED),
       delegate_(std::move(delegate)),
       task_tracker_(task_tracker) {
   DCHECK(delegate_);
   DCHECK(task_tracker_);
 
   const size_t kDefaultStackSize = 0;
   PlatformThread::CreateWithPriority(kDefaultStackSize, this, &thread_handle_,
                                      thread_priority);
 }
 
@@ skipping 40 matching lines @@
   }
 }
 
 bool SchedulerWorkerThread::ShouldExitForTesting() const {
   AutoSchedulerLock auto_lock(should_exit_for_testing_lock_);
   return should_exit_for_testing_;
 }
 
 }  // namespace internal
 }  // namespace base