Remove PermissionContext factories

chrome/browser/permissions/permission_context.h

-// Copyright 2015 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_PERMISSIONS_PERMISSION_CONTEXT_H_
-#define CHROME_BROWSER_PERMISSIONS_PERMISSION_CONTEXT_H_
-
-#include <list>
-
-#include "base/macros.h"
-#include "components/content_settings/core/common/content_settings_types.h"
-
-class PermissionContextBase;
-class Profile;
-class KeyedServiceBaseFactory;
-
-namespace content {
-enum class PermissionType;
-};  // namespace content
-
-class PermissionContext {
- public:
-  // Helper method returning the PermissionContextBase object associated with
-  // the given ContentSettingsType.
-  // This can return nullptr if the the permission type has no associated
-  // context.
-  static PermissionContextBase* Get(
-      Profile* profile,
-      content::PermissionType content_settings_type);
-
-  // Return all the factories related to PermissionContext. These are the
-  // factories used by ::Get() to create a PermissionContextBase.
-  // This is meant to be used by callers of ::Get() that need to depend on these
-  // factories.
-  static const std::list<KeyedServiceBaseFactory*>& GetFactories();
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(PermissionContext);
-};
-
-#endif // CHROME_BROWSER_PERMISSIONS_PERMISSION_CONTEXT_H_