Adds async interface method to PersistentPrefStore.

chrome/browser/prefs/pref_notifier_impl.cc

Index: chrome/browser/prefs/pref_notifier_impl.cc
diff --git a/chrome/browser/prefs/pref_notifier_impl.cc b/chrome/browser/prefs/pref_notifier_impl.cc
index d5ad24c94338f2748ed19ca59291095f808a608b..bc10e53083025567e435173924d02132fc1e4a3b 100644
--- a/chrome/browser/prefs/pref_notifier_impl.cc
+++ b/chrome/browser/prefs/pref_notifier_impl.cc
@@ -74,13 +74,13 @@ void PrefNotifierImpl::OnPreferenceChanged(const std::string& path) {
   FireObservers(path);
 }
 
-void PrefNotifierImpl::OnInitializationCompleted() {
+void PrefNotifierImpl::OnInitializationCompleted(bool succeeded) {
   DCHECK(CalledOnValidThread());
 
   NotificationService::current()->Notify(
       NotificationType::PREF_INITIALIZATION_COMPLETED,
       Source<PrefService>(pref_service_),
-      NotificationService::NoDetails());
+      Details<PrefService>(succeeded ? pref_service_ : NULL));

[Mattias Nissler (ping if slow), 2011/05/04 23:33:08]

That's a weird contract. Why not have an enum and use
Details<PrefService::InitializationStatus> here?

[altimofeev, 2011/05/05 12:59:28]

I mistakenly thought that detail's pointer should outlive function end. Since it
is not the case, I think Details<bool> will be sufficient.

 }
 
 void PrefNotifierImpl::FireObservers(const std::string& path) {