Migrate WaitableEvent to enum-based constructor in services/

services/shell/runner/host/child_process_host.cc

 // Copyright 2014 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 "services/shell/runner/host/child_process_host.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 32 matching lines @@
 ChildProcessHost::ChildProcessHost(base::TaskRunner* launch_process_runner,
                                    NativeRunnerDelegate* delegate,
                                    bool start_sandboxed,
                                    const Identity& target,
                                    const base::FilePath& app_path)
     : launch_process_runner_(launch_process_runner),
       delegate_(delegate),
       start_sandboxed_(start_sandboxed),
       target_(target),
       app_path_(app_path),
-      start_child_process_event_(false, false),
-      weak_factory_(this) {
-}
+      start_child_process_event_(
+          base::WaitableEvent::ResetPolicy::AUTOMATIC,
+          base::WaitableEvent::InitialState::NOT_SIGNALED),
+      weak_factory_(this) {}
 
 ChildProcessHost::~ChildProcessHost() {
   if (!app_path_.empty()) {
     CHECK(!mojo_ipc_channel_)
         << "Destroying ChildProcessHost before calling Join";
   }
 }
 
 mojom::ShellClientPtr ChildProcessHost::Start(
     const Identity& target,
@@ skipping 135 matching lines @@
       mojo::edk::ChildProcessLaunched(
           child_process_.Handle(),
           mojo::edk::ScopedPlatformHandle(mojo::edk::PlatformHandle(
               mojo_ipc_channel_->PassServerHandle().release().handle)));
     }
   }
   start_child_process_event_.Signal();
 }
 
 }  // namespace shell