Examine source code of ffcookies

{
  "manifest_version": 2,
  "name": "ffcookies",
  "version": "0.1",
  "permissions": [
    "*://*/",
    "cookies",
    "webRequest",
    "webRequestBlocking",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "browser_action": {
    "default_title": "ffcookies: Firefox cookies migration tool.",
    "default_popup": "browser_action.html"
  },
  "web_accessible_resources": [
    "import.html",
    "import.js",
    "jquery.js",
    "openpgp.js",
    "openpgp.worker.js"
  ]
}