Lock only permitted where a supervised user is or was.

chrome/browser/ui/cocoa/profiles/profile_chooser_controller_unittest.mm

Index: chrome/browser/ui/cocoa/profiles/profile_chooser_controller_unittest.mm
diff --git a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller_unittest.mm b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller_unittest.mm
index 1d3ae605db989b8e85b78813eb6535de54b4c2f4..2231fd0c3c35209ccf643bdd27f26a494044cfaa 100644
--- a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller_unittest.mm
+++ b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller_unittest.mm
@@ -499,6 +499,8 @@ TEST_F(ProfileChooserControllerTest, SignedInProfileLockEnabled) {
   // The preference, not the email, determines whether the profile can lock.
   browser()->profile()->GetPrefs()->SetString(
       prefs::kGoogleServicesHostedDomain, "google.com");
+  // Lock is only available where a supervised user is present.
+  cache->SetSupervisedUserIdOfProfileAtIndex(1, kEmail);
 
   StartProfileChooserController();
   NSArray* subviews = [[[controller() window] contentView] subviews];