Examine source code of Open in Browser

{
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "version": "2.11",
  "manifest_version": 2,
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "openinbrowser@www.spasche.net",
      "strict_min_version": "57.0a1"
    }
  },
  "background": {
    "scripts": [
      "mime-metadata.js",
      "prefs.js",
      "dialogmanager.js",
      "content-disposition.js",
      "content-handlers-firefox.js",
      "background.js"
    ]
  },
  "content_security_policy": "script-src 'self'; object-src blob:;",
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "history",
    "menus",
    "sessions",
    "storage",
    "tabs",
    "webNavigation",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ]
}