Moves ash::user::LoginStatus to ash/common

ash/system/tray/default_system_tray_delegate.cc

Index: ash/system/tray/default_system_tray_delegate.cc
diff --git a/ash/system/tray/default_system_tray_delegate.cc b/ash/system/tray/default_system_tray_delegate.cc
index 2627e926d94c0e0cb57349101f2cba79949201ff..40429c44b806228a61cab66eeff5178d79f8d4f5 100644
--- a/ash/system/tray/default_system_tray_delegate.cc
+++ b/ash/system/tray/default_system_tray_delegate.cc
@@ -27,8 +27,8 @@ bool DefaultSystemTrayDelegate::GetTrayVisibilityOnStartup() {
   return true;
 }
 
-user::LoginStatus DefaultSystemTrayDelegate::GetUserLoginStatus() const {
-  return user::LOGGED_IN_USER;
+LoginStatus DefaultSystemTrayDelegate::GetUserLoginStatus() const {
+  return LoginStatus::USER;
 }
 
 std::string DefaultSystemTrayDelegate::GetSupervisedUserManager() const {
@@ -38,7 +38,7 @@ std::string DefaultSystemTrayDelegate::GetSupervisedUserManager() const {
 }
 
 bool DefaultSystemTrayDelegate::IsUserSupervised() const {
-  return GetUserLoginStatus() == ash::user::LOGGED_IN_SUPERVISED;
+  return GetUserLoginStatus() == LoginStatus::SUPERVISED;
 }
 
 void DefaultSystemTrayDelegate::GetSystemUpdateInfo(UpdateInfo* info) const {