Examine source code of NoCookies

{
  "manifest_version": 2,
  "name": "NoCookies",
  "version": "3.1.0",
  "description": "Hide cookie popup of web sites.",
  "icons": {
    "512": "icons/cookies-512.png"
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "unlimitedStorage",
    "tabs",
    "contextMenus",
    "scripting"
  ],
  "background": {
    "scripts": [
      "content_scripts/background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "No Cookies",
    "default_icon": {
      "512": "icons/cookies-512.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hidecookies@aristy.com"
    }
  }
}