Make Hands-Off Zero-Touch Enrollment compatibile with tests

chrome/browser/chromeos/login/startup_utils.h

Index: chrome/browser/chromeos/login/startup_utils.h
diff --git a/chrome/browser/chromeos/login/startup_utils.h b/chrome/browser/chromeos/login/startup_utils.h
index a5b991f8670204bfb94aba1d55c056a97ef7dc5a..6f9d4ef18dd36ec60b3602e875b1b988d96b3422 100644
--- a/chrome/browser/chromeos/login/startup_utils.h
+++ b/chrome/browser/chromeos/login/startup_utils.h
@@ -59,6 +59,15 @@ class StartupUtils {
   // Sets initial locale in local settings.
   static void SetInitialLocale(const std::string& locale);
 
+  // Saves the time of the last update check which did not result in any update.
+  static void SaveTimeOfLastUpdateCheckWithoutUpdate(base::Time time);
+
+  // Clears the update check time which was previously saved.
+  static void ClearTimeOfLastUpdateCheckWithoutUpdate();
+
+  // Returns the time of the last update check which did not lead to an update.
+  static base::Time GetTimeOfLastUpdateCheckWithoutUpdate();
+
   // Registers OOBE preferences.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 };