Examine source code of Android online simulator for Arcade games

{
  "manifest_version": 2,
  "name": "__MSG_title__",
  "version": "1.3.6resigned1",
  "description": "__MSG_description__",
  "default_locale": "en",
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": "icons/app_38.png"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "tabs"
  ],
  "options_page": "settings.html",
  "icons": {
    "16": "icons/app_16.png",
    "48": "icons/app_48.png",
    "128": "icons/app_128.png"
  },
  "background": {
    "scripts": [
      "support.js",
      "jquery-3.3.1.min.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{828c7ae3-7509-4bc8-afcb-b7a219b44765}"
    }
  }
}