Examine source code of Net iD Client

{
  "author": "SecMaker AB",
  "name": "Net iD Client",
  "version": "1.0.3.0",
  "default_locale": "en",
  "description": "__MSG_AppDescription__",
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "firefox_webextension@secmaker.com"
    }
  },
  "background": {
    "persistent": false,
    "scripts": [
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "js/content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "permissions": [
    "nativeMessaging",
    "<all_urls>"
  ]
}