KeyPermissions: Remove unused file

This CL removes key_permissions_manager_user_service.h file which is
unused after https://crrev.com/c/2405576.

Bug: 1127284
Change-Id: I42a4a45f4b8deea57c2d52c490499fef06706ba8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2437432Reviewed-by: Omar Morsi <omorsi@google.com>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Omar Morsi <omorsi@google.com>
Cr-Commit-Position: refs/heads/master@{#811691}

chrome/browser/chromeos/platform_keys/key_permissions/key_permissions_manager_user_service.h

-// Copyright 2020 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_PLATFORM_KEYS_KEY_PERMISSIONS_KEY_PERMISSIONS_MANAGER_USER_SERVICE_H_
-#define CHROME_BROWSER_CHROMEOS_PLATFORM_KEYS_KEY_PERMISSIONS_KEY_PERMISSIONS_MANAGER_USER_SERVICE_H_
-
-#include "base/no_destructor.h"
-#include "chrome/browser/chromeos/platform_keys/key_permissions/key_permissions_manager.h"
-#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
-#include "components/keyed_service/core/keyed_service.h"
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}
-
-namespace chromeos {
-namespace platform_keys {
-
-// KeyPermissionsManagerUserService is a wrapper over KeyPermissionsManager
-// (KPM) to provide KPMs keyed by profile. KPM is not a KeyedService by itself
-// so as future work can introduce a global device-wide KPM instance.
-class KeyPermissionsManagerUserService : public KeyedService {
- public:
-  KeyPermissionsManagerUserService();
-  ~KeyPermissionsManagerUserService() override;
-
-  virtual KeyPermissionsManager* key_permissions_manager() = 0;
-};
-
-class KeyPermissionsManagerUserServiceFactory
-    : public BrowserContextKeyedServiceFactory {
- public:
-  static KeyPermissionsManagerUserService* GetForBrowserContext(
-      content::BrowserContext* context);
-  static KeyPermissionsManagerUserServiceFactory* GetInstance();
-
- private:
-  friend class base::NoDestructor<KeyPermissionsManagerUserServiceFactory>;
-
-  KeyPermissionsManagerUserServiceFactory();
-  ~KeyPermissionsManagerUserServiceFactory() override = default;
-
-  // BrowserStateKeyedServiceFactory.
-  KeyedService* BuildServiceInstanceFor(
-      content::BrowserContext* context) const override;
-  void RegisterProfilePrefs(
-      user_prefs::PrefRegistrySyncable* registry) override;
-};
-
-}  // namespace platform_keys
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_PLATFORM_KEYS_KEY_PERMISSIONS_KEY_PERMISSIONS_MANAGER_USER_SERVICE_H_