Migrate WaitableEvent to enum-based constructor in chrome/

chrome/browser/password_manager/native_backend_gnome_x.cc

Index: chrome/browser/password_manager/native_backend_gnome_x.cc
diff --git a/chrome/browser/password_manager/native_backend_gnome_x.cc b/chrome/browser/password_manager/native_backend_gnome_x.cc
index ded031e6053e3afb86159da548880481154ff1ed..75dde044a67a6ab0417d498c4412e2a350012ddb 100644
--- a/chrome/browser/password_manager/native_backend_gnome_x.cc
+++ b/chrome/browser/password_manager/native_backend_gnome_x.cc
@@ -281,7 +281,10 @@ const GnomeKeyringPasswordSchema kGnomeSchema = {
 // be used in parallel.
 class GKRMethod : public GnomeKeyringLoader {
  public:
-  GKRMethod() : event_(false, false), result_(GNOME_KEYRING_RESULT_CANCELLED) {}
+  GKRMethod()
+      : event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+               base::WaitableEvent::InitialState::NOT_SIGNALED),
+        result_(GNOME_KEYRING_RESULT_CANCELLED) {}
 
   // Action methods. These call gnome_keyring_* functions. Call from UI thread.
   // See GetProfileSpecificAppString() for more information on the app string.