Migrate WaitableEvent to enum-based constructor in chrome/

chrome/browser/extensions/api/downloads/downloads_api_browsertest.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.
 
 // Disable everything on windows only. http://crbug.com/306144
 #ifndef OS_WIN
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 696 matching lines @@
                                    const char* data,
                                    int length) {
     // Create a temp file.
     base::FilePath temp_file;
     if (!base::CreateTemporaryFile(&temp_file) ||
         base::WriteFile(temp_file, data, length) != length) {
       return false;
     }
     // Invoke the fileapi to copy it into the sandboxed filesystem.
     bool result = false;
-    base::WaitableEvent done_event(true, false);
+    base::WaitableEvent done_event(
+        base::WaitableEvent::ResetPolicy::MANUAL,
+        base::WaitableEvent::InitialState::NOT_SIGNALED);
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&CreateFileForTestingOnIOThread,
                    base::Unretained(context),
                    path, temp_file,
                    base::Unretained(&result),
                    base::Unretained(&done_event)));
     // Wait for that to finish.
     done_event.Wait();
     base::DeleteFile(temp_file, false);
@@ skipping 3504 matching lines @@
   EXPECT_EQ(downloads::FILENAME_CONFLICT_ACTION_PROMPT, conflict_action);
   EXPECT_FALSE(warnings.empty());
   EXPECT_EQ(Warning::kDownloadFilenameConflict,
             warnings.begin()->warning_type());
   EXPECT_EQ("incumbent", warnings.begin()->extension_id());
 }
 
 }  // namespace extensions
 
 #endif  // http://crbug.com/306144