[Extern Generation] Add a presubmit script to check externs not being updated

third_party/closure_compiler/externs/bluetooth.js

Index: third_party/closure_compiler/externs/bluetooth.js
diff --git a/third_party/closure_compiler/externs/bluetooth.js b/third_party/closure_compiler/externs/bluetooth.js
deleted file mode 100644
index e882535196a4a40666957fbf32a30b1d3b818450..0000000000000000000000000000000000000000
--- a/third_party/closure_compiler/externs/bluetooth.js
+++ /dev/null
@@ -1,156 +0,0 @@
-// 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.
-
-// This file was generated by:
-//   ./tools/json_schema_compiler/compiler.py.
-// NOTE: The format of types has changed. 'FooType' is now
-//   'chrome.bluetooth.FooType'.
-// Please run the closure compiler before committing changes.
-// See https://chromium.googlesource.com/chromium/src/+/master/docs/closure_compilation.md
-
-/** @fileoverview Externs generated from namespace: bluetooth */
-
-/**
- * @const
- */
-chrome.bluetooth = {};
-
-/**
- * @enum {string}
- * @see https://developer.chrome.com/extensions/bluetooth#type-VendorIdSource
- */
-chrome.bluetooth.VendorIdSource = {
-  BLUETOOTH: 'bluetooth',
-  USB: 'usb',
-};
-
-/**
- * @enum {string}
- * @see https://developer.chrome.com/extensions/bluetooth#type-DeviceType
- */
-chrome.bluetooth.DeviceType = {
-  COMPUTER: 'computer',
-  PHONE: 'phone',
-  MODEM: 'modem',
-  AUDIO: 'audio',
-  CAR_AUDIO: 'carAudio',
-  VIDEO: 'video',
-  PERIPHERAL: 'peripheral',
-  JOYSTICK: 'joystick',
-  GAMEPAD: 'gamepad',
-  KEYBOARD: 'keyboard',
-  MOUSE: 'mouse',
-  TABLET: 'tablet',
-  KEYBOARD_MOUSE_COMBO: 'keyboardMouseCombo',
-};
-
-/**
- * @typedef {{
- *   address: string,
- *   name: string,
- *   powered: boolean,
- *   available: boolean,
- *   discovering: boolean
- * }}
- * @see https://developer.chrome.com/extensions/bluetooth#type-AdapterState
- */
-chrome.bluetooth.AdapterState;
-
-/**
- * @typedef {{
- *   address: string,
- *   name: (string|undefined),
- *   deviceClass: (number|undefined),
- *   vendorIdSource: (!chrome.bluetooth.VendorIdSource|undefined),
- *   vendorId: (number|undefined),
- *   productId: (number|undefined),
- *   deviceId: (number|undefined),
- *   type: (!chrome.bluetooth.DeviceType|undefined),
- *   paired: (boolean|undefined),
- *   connected: (boolean|undefined),
- *   connecting: (boolean|undefined),
- *   connectable: (boolean|undefined),
- *   uuids: (!Array<string>|undefined),
- *   inquiryRssi: (number|undefined),
- *   inquiryTxPower: (number|undefined)
- * }}
- * @see https://developer.chrome.com/extensions/bluetooth#type-Device
- */
-chrome.bluetooth.Device;
-
-/**
- * Get information about the Bluetooth adapter.
- * @param {function(!chrome.bluetooth.AdapterState):void} callback Called with
- *     an AdapterState object describing the adapter state.
- * @see https://developer.chrome.com/extensions/bluetooth#method-getAdapterState
- */
-chrome.bluetooth.getAdapterState = function(callback) {};
-
-/**
- * Get information about a Bluetooth device known to the system.
- * @param {string} deviceAddress Address of device to get.
- * @param {function(!chrome.bluetooth.Device):void} callback Called with the
- *     Device object describing the device.
- * @see https://developer.chrome.com/extensions/bluetooth#method-getDevice
- */
-chrome.bluetooth.getDevice = function(deviceAddress, callback) {};
-
-/**
- * Get a list of Bluetooth devices known to the system, including paired and
- * recently discovered devices.
- * @param {function(!Array<!chrome.bluetooth.Device>):void} callback Called when
- *     the search is completed.
- * @see https://developer.chrome.com/extensions/bluetooth#method-getDevices
- */
-chrome.bluetooth.getDevices = function(callback) {};
-
-/**
- * <p>Start discovery. Newly discovered devices will be returned via the
- * onDeviceAdded event. Previously discovered devices already known to the
- * adapter must be obtained using getDevices and will only be updated using the
- * |onDeviceChanged| event if information about them changes.</p><p>Discovery
- * will fail to start if this application has already called startDiscovery.
- * Discovery can be resource intensive: stopDiscovery should be called as soon
- * as possible.</p>
- * @param {function():void=} callback Called to indicate success or failure.
- * @see https://developer.chrome.com/extensions/bluetooth#method-startDiscovery
- */
-chrome.bluetooth.startDiscovery = function(callback) {};
-
-/**
- * Stop discovery.
- * @param {function():void=} callback Called to indicate success or failure.
- * @see https://developer.chrome.com/extensions/bluetooth#method-stopDiscovery
- */
-chrome.bluetooth.stopDiscovery = function(callback) {};
-
-/**
- * Fired when the state of the Bluetooth adapter changes.
- * @type {!ChromeEvent}
- * @see https://developer.chrome.com/extensions/bluetooth#event-onAdapterStateChanged
- */
-chrome.bluetooth.onAdapterStateChanged;
-
-/**
- * Fired when information about a new Bluetooth device is available.
- * @type {!ChromeEvent}
- * @see https://developer.chrome.com/extensions/bluetooth#event-onDeviceAdded
- */
-chrome.bluetooth.onDeviceAdded;
-
-/**
- * Fired when information about a known Bluetooth device has changed.
- * @type {!ChromeEvent}
- * @see https://developer.chrome.com/extensions/bluetooth#event-onDeviceChanged
- */
-chrome.bluetooth.onDeviceChanged;
-
-/**
- * Fired when a Bluetooth device that was previously discovered has been out of
- * range for long enough to be considered unavailable again, and when a paired
- * device is removed.
- * @type {!ChromeEvent}
- * @see https://developer.chrome.com/extensions/bluetooth#event-onDeviceRemoved
- */
-chrome.bluetooth.onDeviceRemoved;