[ChromeOS] Expose keyboard remapping to signin screen.

chrome/browser/chromeos/system/device_disabling_browsertest.cc

 // Copyright 2014 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 <memory>
 #include <string>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 185 matching lines @@
             GetCurrentScreenName(web_contents));
 
   // Disconnect from the fake Ethernet network.
   OobeUI* const oobe_ui = host->GetOobeUI();
   ASSERT_TRUE(oobe_ui);
   const scoped_refptr<NetworkStateInformer> network_state_informer =
       oobe_ui->network_state_informer_for_test();
   ASSERT_TRUE(network_state_informer);
   network_state_informer->AddObserver(this);
   SigninScreenHandler* const signin_screen_handler =
-      oobe_ui->signin_screen_handler_for_test();
+      oobe_ui->signin_screen_handler();
   ASSERT_TRUE(signin_screen_handler);
   signin_screen_handler->ZeroOfflineTimeoutForTesting();
   SimulateNetworkOffline();
   network_state_change_wait_run_loop_->Run();
   network_state_informer->RemoveObserver(this);
   base::RunLoop().RunUntilIdle();
 
   // Verify that the offline error screen was not shown and the device disabled
   // screen is still being shown instead.
   EXPECT_EQ(GetOobeScreenName(OobeScreen::SCREEN_DEVICE_DISABLED),
             GetCurrentScreenName(web_contents));
 }
 
 }  // namespace system
 }  // namespace chromeos