Examine source code of Cookies Disable

{
  "description": "Disable Cookies by Default. enable/disable it with one click. or clear it.",
  "manifest_version": 2,
  "name": "MCookiesDisable",
  "version": "1.0.1resigned1",
  "icons": {
    "48": "icons/icon.png"
  },
  "permissions": [
    "browsingData",
    "privacy"
  ],
  "browser_action": {
    "default_icon": "icons/off-32.png",
    "default_title": "MCookiesDisable",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aaa99802-4fa1-452c-a30e-595b07074c35}"
    }
  }
}