Examine source code of Adblock Rocket

{
  "manifest_version": 2,
  "name": "Universal Adblocker",
  "version": "1.0",
  "description": "A universal adblocker extension designed for YouTube and other sites.",
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "turtle_email@bluedron.com"
    }
  }
}