Adding new user menu section to the SystemTrayMenu & refactoring of user access

chrome/browser/chromeos/login/user_manager.h

Index: chrome/browser/chromeos/login/user_manager.h
diff --git a/chrome/browser/chromeos/login/user_manager.h b/chrome/browser/chromeos/login/user_manager.h
index 442e4a72b42c7c8e5cbc50949a238c57ff562073..f40496289c190bfeecfe150acfb2da186f9be802 100644
--- a/chrome/browser/chromeos/login/user_manager.h
+++ b/chrome/browser/chromeos/login/user_manager.h
@@ -103,6 +103,11 @@ class UserManager {
   // Returns a list of users who are currently logged in.
   virtual const UserList& GetLoggedInUsers() const = 0;
 
+  // Returns a list of users who are currently logged in in the LRU order -
+  // so the active user is the first one in the list. If there is no user logged
+  // in, the current user will be returned.
+  virtual const UserList& GetLRULoggedInUsers() = 0;
+
   // Indicates that a user with the given |email| has just logged in. The
   // persistent list is updated accordingly if the user is not ephemeral.
   // |browser_restart| is true when reloading Chrome after crash to distinguish