Send a notification when the signed-in user is about to sign out.

chrome/browser/signin/signin_manager.cc

Index: chrome/browser/signin/signin_manager.cc
diff --git a/chrome/browser/signin/signin_manager.cc b/chrome/browser/signin/signin_manager.cc
index 581414dabfc3fdee2d3cc7114ce1b2d95b60f4ad..e518150c5c303fb2b3c70a3e614ebf29080fc6d5 100644
--- a/chrome/browser/signin/signin_manager.cc
+++ b/chrome/browser/signin/signin_manager.cc
@@ -366,12 +366,12 @@ void SigninManager::SignOut() {
   profile_->GetPrefs()->ClearPref(prefs::kGoogleServicesUsername);
   profile_->GetPrefs()->ClearPref(prefs::kIsGooglePlusUser);
   TokenService* token_service = TokenServiceFactory::GetForProfile(profile_);
-  token_service->ResetCredentialsInMemory();
-  token_service->EraseTokensFromDB();
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_GOOGLE_SIGNED_OUT,
       content::Source<Profile>(profile_),
       content::Details<const GoogleServiceSignoutDetails>(&details));
+  token_service->ResetCredentialsInMemory();
+  token_service->EraseTokensFromDB();
 }
 
 bool SigninManager::AuthInProgress() const {