{
  "background": {
    "persistent": false
  },
  "optional_permissions": [
    "webNavigation"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/SafariIconSponsorBlocker16px.png",
      "32": "icons/SafariIconSponsorBlocker32px.png",
      "64": "icons/SafariIconSponsorBlocker64px.png",
      "128": "icons/SafariIconSponsorBlocker128px.png"
    }
  }
}