clang-tidy WaitableEvent refactor (Android side)

android_webview/browser/aw_form_database_service.cc

Index: android_webview/browser/aw_form_database_service.cc
diff --git a/android_webview/browser/aw_form_database_service.cc b/android_webview/browser/aw_form_database_service.cc
index 3370cae7e98f9bca6652a926c0c8587af6942984..3a27d4bdd83c30aaa8af1adb4c31df3a2c2a2d59 100644
--- a/android_webview/browser/aw_form_database_service.cc
+++ b/android_webview/browser/aw_form_database_service.cc
@@ -77,7 +77,8 @@ void AwFormDatabaseService::ClearFormDataImpl() {
 }
 
 bool AwFormDatabaseService::HasFormData() {
-  WaitableEvent completion(false, false);
+  WaitableEvent completion(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+                           base::WaitableEvent::InitialState::NOT_SIGNALED);
   bool result = false;
   BrowserThread::PostTask(
       BrowserThread::DB,