Examine source code of Twitch Companion

{
  "name": "Twitch Companion",
  "version": "2.2.2",
  "default_locale": "en",
  "manifest_version": 2,
  "description": "Access quickly to your favorite streams and search them by games. Be notified by popup of which one of your favorite streamers are online. Fully customizable application through parameters tab.",
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "all_frames": true,
      "js": [
        "common/content/theatre-mode.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "common/lib/constants.js",
      "common/dist/contributors.js",
      "common/lib/3rd/async.js",
      "common/lib/3rd/jquery.js",
      "common/lib/3rd/underscore.js",
      "common/lib/3rd/backbone.js",
      "common/lib/3rd/backbone.memento.js",
      "common/lib/3rd/backbone.mixin.js",
      "common/lib/3rd/eventemitter.js",
      "common/lib/utils.js",
      "common/lib/oauth2.js",
      "background.js",
      "common/lib/twitch-api.js",
      "common/lib/onerror.js",
      "common/lib/app.js"
    ],
    "persistent": true
  },
  "minimum_chrome_version": "1.1.142",
  "icons": {
    "16": "common/icons/16.png",
    "32": "common/icons/32.png",
    "48": "common/icons/48.png",
    "64": "common/icons/64.png",
    "128": "common/icons/128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "common/icons/16.png",
      "32": "common/icons/32.png",
      "48": "common/icons/48.png"
    },
    "default_popup": "common/html/popup.html"
  },
  "permissions": [
    "storage",
    "https://*/*",
    "http://*/*",
    "notifications",
    "tabs"
  ]
}