Remove //device/devices_app.

device/devices_app/usb/public/interfaces/permission_provider.mojom

-// 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.
-
-module device.usb;
-
-import "device.mojom";
-
-interface PermissionProvider {
-  // Filters a set of |requested_devices| down to the set of |allowed_guids|
-  // that should be accessible to clients of the DeviceManager instance.
-  HasDevicePermission(array<DeviceInfo> requested_devices)
-      => (array<string> allowed_guids);
-
-  // Returns whether or not the client has permission to access
-  // |requested_configuration| on |device|.
-  HasConfigurationPermission(uint8 requested_configuration,
-                             DeviceInfo device) => (bool allowed);
-
-  // Returns whether or not the client has permission to access
-  // |requested_interface| on |device| when it is in configuration
-  // |configuration_value|.
-  HasInterfacePermission(uint8 requested_interface,
-                         uint8 configuration_value,
-                         DeviceInfo device) => (bool allowed);
-
-  // Requests a new binding to this service.
-  Bind(PermissionProvider& request);
-};