Migrate WaitableEvent to enum-based constructor in chrome/

chrome/browser/sessions/session_service_unittest.cc

 // Copyright 2012 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 "chrome/browser/sessions/session_service.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 1017 matching lines @@
 // 4. Deletes SessionService.
 // 5. Signals the semaphore that 2 and 3 are waiting on, allowing
 //    GetLastSession() to continue.
 // 6. runs the message loop, this is quit when the task scheduled in 3 posts
 //    back to the ui thread to quit the run loop.
 // The call to get the previous session should never be invoked because the
 // SessionService was destroyed before SessionService could process the results.
 TEST_F(SessionServiceTest, GetSessionsAndDestroy) {
   base::CancelableTaskTracker cancelable_task_tracker;
   base::RunLoop run_loop;
-  base::WaitableEvent event(true, false);
+  base::WaitableEvent event(base::WaitableEvent::ResetPolicy::MANUAL,
+                            base::WaitableEvent::InitialState::NOT_SIGNALED);
   helper_.RunTaskOnBackendThread(FROM_HERE,
                                  base::Bind(&base::WaitableEvent::Wait,
                                             base::Unretained(&event)));
   service()->GetLastSession(base::Bind(&OnGotPreviousSession),
                             &cancelable_task_tracker);
   helper_.RunTaskOnBackendThread(
       FROM_HERE,
       base::Bind(&PostBackToThread,
                  base::Unretained(base::MessageLoop::current()),
                  base::Unretained(&run_loop)));
   delete helper_.ReleaseService();
   event.Signal();
   run_loop.Run();
 }