Examine source code of TeaserFastttt

{
  "manifest_version": 2,
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "notifications",
    "webNavigation",
    "http://*/*",
    "https://*/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png"
    },
    "default_popup": "popup.html",
    "default_title": "TeaserFast"
  },
  "content_scripts": [
    {
      "css": [
        "css/stylet.css"
      ],
      "js": [
        "js/content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "icons": {
    "128": "images/icon128.png"
  },
  "name": "TeaserFast",
  "description": "Расширение для работы в TeaserFast.ru",
  "version": "1.1.8",
  "browser_specific_settings": {
    "gecko": {
      "id": "{fc69a5fb-269f-4daa-8f69-dce796e0d9a9}"
    }
  }
}