browser test for kAccountsPrefAllowNewUser.

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/system/chromeos/devicetype_utils.h"
 #include "base/bind.h"
 #include "base/guid.h"
 #include "base/logging.h"
@@ skipping 899 matching lines @@
 void GaiaScreenHandler::UpdateState(NetworkError::ErrorReason reason) {
   if (signin_screen_handler_)
     signin_screen_handler_->UpdateState(reason);
 }
 
 SigninScreenHandlerDelegate* GaiaScreenHandler::Delegate() {
   return signin_screen_handler_->delegate_;
 }
 
 bool GaiaScreenHandler::IsRestrictiveProxy() const {
+  if (disable_restrictive_proxy_check_for_test_)
+    return false;
+
   return captive_portal_status_ ==
              NetworkPortalDetector::CAPTIVE_PORTAL_STATUS_PORTAL ||
          captive_portal_status_ ==
              NetworkPortalDetector::CAPTIVE_PORTAL_STATUS_OFFLINE;
 }
 
+void GaiaScreenHandler::DisableRestrictiveProxyCheckForTest() {
+  disable_restrictive_proxy_check_for_test_ = true;
+}
+
 }  // namespace chromeos