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

ash/system/chromeos/tray_tracing.cc

Index: ash/system/chromeos/tray_tracing.cc
diff --git a/ash/system/chromeos/tray_tracing.cc b/ash/system/chromeos/tray_tracing.cc
index b74bc5ae93fce20c8c7a65a7ba54d736832fb48a..6a8e92f3c7867be1d91bb5a96191dd9e6eaae502 100644
--- a/ash/system/chromeos/tray_tracing.cc
+++ b/ash/system/chromeos/tray_tracing.cc
@@ -84,14 +84,14 @@ bool TrayTracing::GetInitialVisibility() {
   return false;
 }
 
-views::View* TrayTracing::CreateDefaultView(user::LoginStatus status) {
+views::View* TrayTracing::CreateDefaultView(LoginStatus status) {
   CHECK(default_ == NULL);
   if (tray_view() && tray_view()->visible())
     default_ = new tray::DefaultTracingView();
   return default_;
 }
 
-views::View* TrayTracing::CreateDetailedView(user::LoginStatus status) {
+views::View* TrayTracing::CreateDetailedView(LoginStatus status) {
   return NULL;
 }