Examine source code of Wise by Front Row

{
  "manifest_version": 2,
  "name": "Wise by Front Row",
  "version": "1.1resigned1",
  "description": "Add links to your shared reading lists on Wise.",
  "homepage_url": "https://www.wiseapp.com",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-48.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "default_title": "Wise",
    "default_popup": "popup/add.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b68d0804-3b68-4909-9a56-fcebafca204a}"
    }
  }
}