Make extensions developer mode adhere to policy

third_party/closure_compiler/externs/developer_private.js

 // Copyright 2016 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.developerPrivate.FooType'.
 // Please run the closure compiler before committing changes.
 // See https://chromium.googlesource.com/chromium/src/+/master/docs/closure_compilation.md
@@ skipping 304 matching lines @@
  * }}
  * @see https://developer.chrome.com/extensions/developerPrivate#type-ExtensionInfo
  */
 chrome.developerPrivate.ExtensionInfo;
 
 /**
  * @typedef {{
  *   appInfoDialogEnabled: boolean,
  *   canLoadUnpacked: boolean,
  *   inDeveloperMode: boolean,
+ *   isDeveloperModeControlledByPolicy: boolean,
  *   isIncognitoAvailable: boolean,
  *   isSupervised: boolean
  * }}
  * @see https://developer.chrome.com/extensions/developerPrivate#type-ProfileInfo
  */
 chrome.developerPrivate.ProfileInfo;
 
 /**
  * @typedef {{
  *   id: string,
@@ skipping 450 matching lines @@
  * @see https://developer.chrome.com/extensions/developerPrivate#event-onItemStateChanged
  */
 chrome.developerPrivate.onItemStateChanged;
 
 /**
  * Fired when the profile's state has changed.
  * @type {!ChromeEvent}
  * @see https://developer.chrome.com/extensions/developerPrivate#event-onProfileStateChanged
  */
 chrome.developerPrivate.onProfileStateChanged;