[cros] Use mocked URLFetcher and other mocks in ExistingUserController tests.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index a0b76a7f5577ee39ebf649cb6bdd920575365b03..1d970bf59d30222b6455400dd6b0bd1ff643b642 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -124,8 +124,14 @@
         'browser/chromeos/dbus/mock_update_engine_client.h',
         'browser/chromeos/login/mock_login_status_consumer.cc',
         'browser/chromeos/login/mock_login_status_consumer.h',
+        'browser/chromeos/login/mock_login_utils.cc',
+        'browser/chromeos/login/mock_login_utils.h',
         'browser/chromeos/login/mock_signed_settings_helper.cc',
         'browser/chromeos/login/mock_signed_settings_helper.h',
+        'browser/chromeos/login/mock_url_fetchers.cc',
+        'browser/chromeos/login/mock_url_fetchers.h',
+        'browser/chromeos/login/mock_user_manager.cc',
+        'browser/chromeos/login/mock_user_manager.h',
         # The only thing used from browser is Browser::Type.
         'browser/extensions/mock_extension_special_storage_policy.cc',
         'browser/extensions/mock_extension_special_storage_policy.h',
@@ -178,6 +184,7 @@
         'browser/ui/panels/test_panel_mouse_watcher.h',
         'browser/ui/tab_contents/test_tab_contents_wrapper.cc',
         'browser/ui/tab_contents/test_tab_contents_wrapper.h',
+        'common/net/gaia/mock_url_fetcher_factory.h',
         'common/pref_store_observer_mock.cc',
         'common/pref_store_observer_mock.h',
         'renderer/chrome_mock_render_thread.cc',
@@ -1376,10 +1383,6 @@
         'browser/chromeos/login/mock_owner_key_utils.h',
         'browser/chromeos/login/mock_ownership_service.cc',
         'browser/chromeos/login/mock_ownership_service.h',
-        'browser/chromeos/login/mock_url_fetchers.cc',
-        'browser/chromeos/login/mock_url_fetchers.h',
-        'browser/chromeos/login/mock_user_manager.cc',
-        'browser/chromeos/login/mock_user_manager.h',
         'browser/chromeos/login/online_attempt_unittest.cc',
         'browser/chromeos/login/owner_key_utils_unittest.cc',
         'browser/chromeos/login/owner_manager_unittest.cc',
@@ -2087,7 +2090,6 @@
         'common/metrics/metrics_log_manager_unittest.cc',
         'common/multi_process_lock_unittest.cc',
         'common/net/gaia/gaia_auth_fetcher_unittest.cc',
-        'common/net/gaia/gaia_auth_fetcher_unittest.h',
         'common/net/gaia/gaia_authenticator_unittest.cc',
         'common/net/gaia/gaia_oauth_client_unittest.cc',
         'common/net/gaia/google_service_auth_error_unittest.cc',