Migrate WaitableEvent to enum-based constructor in content/

content/browser/message_port_provider_browsertest.cc

 // Copyright 2015 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/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "content/browser/message_port_service.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 116 matching lines @@
   EXPECT_EQ(received[1].sent_ports[0], port3);
 
   event->Signal();
 }
 
 }  // namespace
 
 // Verify that a message channel can be created and used for exchanging
 // messages.
 IN_PROC_BROWSER_TEST_F(MessagePortProviderBrowserTest, CreateChannel) {
-  base::WaitableEvent event(true, false);
+  base::WaitableEvent event(base::WaitableEvent::ResetPolicy::MANUAL,
+                            base::WaitableEvent::InitialState::NOT_SIGNALED);
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&VerifyCreateChannelOnIOThread, &event));
   event.Wait();
 }
 
 }  // namespace content