Examine source code of quotestab

{
  "manifest_version": 2,
  "name": "quotestab",
  "version": "1.8resigned1",
  "description": "A new tab with random quotes. Let you stay inspire and motivated.",
  "permissions": [
    "tabs",
    "activeTab",
    "storage"
  ],
  "icons": {
    "48": "icons/newtab-48.png"
  },
  "chrome_url_overrides": {
    "newtab": "tabs.html"
  },
  "applications": {
    "gecko": {
      "id": "{5050c980-0bcf-475d-a6a8-e5a6442e1bc2}",
      "strict_min_version": "42.0"
    }
  }
}