Added policy for disabling locally managed users.

chrome/browser/chromeos/login/user_manager_impl.h

Index: chrome/browser/chromeos/login/user_manager_impl.h
diff --git a/chrome/browser/chromeos/login/user_manager_impl.h b/chrome/browser/chromeos/login/user_manager_impl.h
index 63be8224afa40ed38392a255e27c2a336d8176bf..04d3f9140852f829587f1819128f6cf353b3d86e 100644
--- a/chrome/browser/chromeos/login/user_manager_impl.h
+++ b/chrome/browser/chromeos/login/user_manager_impl.h
@@ -134,6 +134,7 @@ class UserManagerImpl
   virtual void SetAppModeChromeClientOAuthInfo(
       const std::string& chrome_client_id,
       const std::string& chrome_client_secret) OVERRIDE;
+  virtual bool AreLocallyManagedUsersAllowed() const OVERRIDE;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
@@ -357,6 +358,11 @@ class UserManagerImpl
   // policy yet.
   bool ephemeral_users_enabled_;
 
+  // Cached flag indicating whether the locally managed users are enabled by
+  // policy. Defaults to |false| if the value has not been read from trusted
+  // device policy yet.
+  bool locally_managed_users_enabled_by_policy_;
+
   // Merge session state (cookie restore process state).
   MergeSessionState merge_session_state_;