Migrate WaitableEvent to enum-based constructor in chrome/

chrome/test/base/ui_test_utils.cc

 // Copyright (c) 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/test/base/ui_test_utils.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 380 matching lines @@
 
 void GetCookies(const GURL& url,
                 WebContents* contents,
                 int* value_size,
                 std::string* value) {
   *value_size = -1;
   if (url.is_valid() && contents) {
     scoped_refptr<net::URLRequestContextGetter> context_getter =
         contents->GetRenderProcessHost()->GetStoragePartition()->
             GetURLRequestContext();
-    base::WaitableEvent event(true /* manual reset */,
-                              false /* not initially signaled */);
+    base::WaitableEvent event(base::WaitableEvent::ResetPolicy::MANUAL,
+                              base::WaitableEvent::InitialState::NOT_SIGNALED);
     CHECK(content::BrowserThread::PostTask(
         content::BrowserThread::IO, FROM_HERE,
         base::Bind(&GetCookiesOnIOThread, url, context_getter, &event, value)));
     event.Wait();
 
     *value_size = static_cast<int>(value->size());
   }
 }
 
 WindowedTabAddedNotificationObserver::WindowedTabAddedNotificationObserver(
@@ skipping 117 matching lines @@
         new content::MessageLoopRunner;
     WaitHistoryLoadedObserver observer(runner.get());
     ScopedObserver<history::HistoryService, history::HistoryServiceObserver>
         scoped_observer(&observer);
     scoped_observer.Add(history_service);
     runner->Run();
   }
 }
 
 }  // namespace ui_test_utils