Revert "chromeos: Fix shelf appearing at login screen under mash"

ash/shell.h

Index: ash/shell.h
diff --git a/ash/shell.h b/ash/shell.h
index c8d0c0651b3b35c6392bd0d76e533dc16730ffc8..86d2677f286c910c9d2db731e2ee68e7e8664e59 100644
--- a/ash/shell.h
+++ b/ash/shell.h
@@ -196,6 +196,9 @@ class ASH_EXPORT Shell : public SystemModalContainerEventFilterDelegate,
   // Called when the user logs in.
   void OnLoginStateChanged(LoginStatus status);
 
+  // Called after the logged-in user's profile is ready.
+  void OnLoginUserProfilePrepared();
+
   // Called when the application is exiting.
   void OnAppTerminating();