Revert of HID-detection screen moved to screenContext.

chrome/browser/chromeos/login/screens/hid_detection_view.h

-// 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.
-
-#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HID_DETECTION_VIEW_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HID_DETECTION_VIEW_H_
-
-#include <string>
-
-#include "base/callback.h"
-
-namespace chromeos {
-
-class HIDDetectionModel;
-
-// Interface between HID detection screen and its representation, either WebUI
-// or Views one. Note, do not forget to call OnViewDestroyed in the
-// dtor.
-class HIDDetectionView {
- public:
-  virtual ~HIDDetectionView() {}
-
-  virtual void PrepareToShow() = 0;
-  virtual void Show() = 0;
-  virtual void Hide() = 0;
-  virtual void Bind(HIDDetectionModel& model) = 0;
-  virtual void Unbind() = 0;
-  // Checks if we should show the screen or enough devices already present.
-  // Calls corresponding set of actions based on the bool result.
-  virtual void CheckIsScreenRequired(
-      const base::Callback<void(bool)>& on_check_done) = 0;
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HID_DETECTION_VIEW_H_