Implement auto-login for ARC kiosk.

chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h"
 
 #include "ash/common/system/chromeos/devicetype_utils.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/guid.h"
@@ skipping 530 matching lines @@
     signin_screen_handler_->RefocusCurrentPod();
 
   frame_error_ = net::OK;
   frame_state_ = FRAME_STATE_LOADED;
 
   if (network_state_informer_->state() == NetworkStateInformer::ONLINE)
     UpdateState(NetworkError::ERROR_REASON_UPDATE);
 
   if (test_expects_complete_login_)
     SubmitLoginFormForTest();
+  if (Delegate())
+    Delegate()->OnGaiaScreenReady();
 }
 
 void GaiaScreenHandler::DoCompleteLogin(const std::string& gaia_id,
                                         const std::string& typed_email,
                                         const std::string& password,
                                         bool using_saml) {
   if (!Delegate())
     return;
 
   if (using_saml && !using_saml_api_)
@@ skipping 278 matching lines @@
 bool GaiaScreenHandler::IsRestrictiveProxy() const {
   return !disable_restrictive_proxy_check_for_test_ &&
          !IsOnline(captive_portal_status_);
 }
 
 void GaiaScreenHandler::DisableRestrictiveProxyCheckForTest() {
   disable_restrictive_proxy_check_for_test_ = true;
 }
 
 }  // namespace chromeos