Manual refactor to enum-based WaitableEvent for remaining mac/ios files

ios/chrome/browser/browser_state/chrome_browser_state_impl.cc

 // Copyright 2013 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 "ios/chrome/browser/browser_state/chrome_browser_state_impl.h"
 
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 54 matching lines @@
 // blocking I/O pool.
 void BlockFileThreadOnDirectoryCreate(base::WaitableEvent* done_creating) {
   done_creating->Wait();
 }
 
 // Initiates creation of browser state directory on |sequenced_task_runner| and
 // ensures that FILE thread is blocked until that operation finishes.
 void CreateBrowserStateDirectory(
     base::SequencedTaskRunner* sequenced_task_runner,
     const base::FilePath& path) {
-  base::WaitableEvent* done_creating = new base::WaitableEvent(false, false);
+  base::WaitableEvent* done_creating =
+      new base::WaitableEvent(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+                              base::WaitableEvent::InitialState::NOT_SIGNALED);
   sequenced_task_runner->PostTask(
       FROM_HERE, base::Bind(&CreateDirectoryAndSignal, path, done_creating));
   // Block the FILE thread until directory is created on I/O pool to make sure
   // that we don't attempt any operation until that part completes.
   web::WebThread::PostTask(web::WebThread::FILE, FROM_HERE,
                            base::Bind(&BlockFileThreadOnDirectoryCreate,
                                       base::Owned(done_creating)));
 }
 
 base::FilePath GetCachePath(const base::FilePath& base) {
@@ skipping 165 matching lines @@
 net::SSLConfigService* ChromeBrowserStateImpl::GetSSLConfigService() {
   // If ssl_config_service_manager_ is null, this typically means that some
   // KeyedService is trying to create a RequestContext at startup,
   // but SSLConfigServiceManager is not initialized until DoFinalInit() which is
   // invoked after all KeyedServices have been initialized (see
   // http://crbug.com/171406).
   DCHECK(ssl_config_service_manager_)
       << "SSLConfigServiceManager is not initialized yet";
   return ssl_config_service_manager_->Get();
 }