text: // Copyright 2018 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 "ui/events/keyboard_hook.h"
  
  #include <memory>
  
  #include "base/callback.h"
  #include "base/optional.h"
  #include "ui/events/keycodes/dom/dom_code.h"
  #include "ui/gfx/native_widget_types.h"
  
  namespace ui {
  
  // static
  std::unique_ptr<KeyboardHook> KeyboardHook::Create(
      base::Optional<base::flat_set<DomCode>> dom_codes,
      gfx::AcceleratedWidget accelerated_widget,
      KeyboardHook::KeyEventCallback callback) {
    return nullptr;
  }
  
  }  // namespace ui
  