Kill login after logging in.

mojo/shell/runner/host/child_process_host.cc

Index: mojo/shell/runner/host/child_process_host.cc
diff --git a/mojo/shell/runner/host/child_process_host.cc b/mojo/shell/runner/host/child_process_host.cc
index 1083128a8a6dd501b982e4b498fe84c8fdc0ce6a..f887dbd4adb9a321ab4ee724ed671b70bc92da68 100644
--- a/mojo/shell/runner/host/child_process_host.cc
+++ b/mojo/shell/runner/host/child_process_host.cc
@@ -58,7 +58,7 @@ ChildProcessHost::~ChildProcessHost() {
 }
 
 mojom::ShellClientPtr ChildProcessHost::Start(
-    const String& name,
+    const Identity& target,
     const ProcessReadyCallback& callback,
     const base::Closure& quit_closure) {
   DCHECK(!child_process_.IsValid());
@@ -77,6 +77,11 @@ mojom::ShellClientPtr ChildProcessHost::Start(
 
   child_command_line->AppendArguments(*parent_command_line, false);
 
+#ifndef NDEBUG
+  child_command_line->AppendSwitchASCII("n", target.name());
+  child_command_line->AppendSwitchASCII("u", target.user_id());
+#endif
+
   if (target_path != app_path_)
     child_command_line->AppendSwitchPath(switches::kChildProcess, app_path_);