Examine source code of Speed Dial FVD

{
  "manifest_version": 2,
  "name": "Speed Dial [FVD] (Manifest V2)",
  "version": "1.0.0",
  "description": "A lightweight Speed Dial (new tab) replacement. Stores dials locally. No external resources. Manifest V2 build for AMO submission.",
  "permissions": [
    "storage"
  ],
  "chrome_url_overrides": {
    "newtab": "dial.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Speed Dial [FVD]"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{1a890ea8-1b2e-4a1d-bba7-e7418ba32348}"
    }
  }
}