Make Hands-Off Zero-Touch Enrollment compatibile with tests

chrome/browser/chromeos/BUILD.gn

Index: chrome/browser/chromeos/BUILD.gn
diff --git a/chrome/browser/chromeos/BUILD.gn b/chrome/browser/chromeos/BUILD.gn
index f16ea783b1385160b8bd401adb8afe5311e04a7c..b33e369093ef7c6939421cbca9455e722fcb0ac7 100644
--- a/chrome/browser/chromeos/BUILD.gn
+++ b/chrome/browser/chromeos/BUILD.gn
@@ -1526,15 +1526,21 @@ static_library("test_support") {
     "login/mock_network_state_helper.h",
     "login/screens/mock_base_screen_delegate.cc",
     "login/screens/mock_base_screen_delegate.h",
+    "login/screens/mock_error_screen.cc",
+    "login/screens/mock_error_screen.h",
     "login/screens/mock_model_view_channel.cc",
     "login/screens/mock_model_view_channel.h",
     "login/screens/mock_network_screen.cc",
     "login/screens/mock_network_screen.h",
+    "login/screens/mock_update_screen.cc",
+    "login/screens/mock_update_screen.h",
   ]
 
   deps = [
     ":chromeos",
+    "//chromeos",
     "//components/policy/proto",
+    "//crypto:platform",
     "//skia",
     "//testing/gmock",
   ]
@@ -1684,6 +1690,7 @@ source_set("unit_tests") {
     "login/quick_unlock/quick_unlock_storage_unittest.cc",
     "login/saml/saml_offline_signin_limiter_unittest.cc",
     "login/screens/network_screen_unittest.cc",
+    "login/screens/update_screen_unittest.cc",
     "login/signin/merge_session_load_page_unittest.cc",
     "login/supervised/supervised_user_authentication_unittest.cc",
     "login/users/affiliation_unittest.cc",