Examine source code of TrustBuilder Backup

{
  "manifest_version": 2,
  "homepage_url": "https://www.trustbuilder.com",
  "name": "TrustBuilder Backup",
  "description": "Keeps the TrustBuilder authentication tools up and running in your browser.",
  "icons": {
    "16": "resources/icon_16.png",
    "24": "resources/icon_24.png",
    "48": "resources/icon_48.png",
    "96": "resources/icon_96.png",
    "128": "resources/icon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tb-backup@jetpack",
      "strict_min_version": "49.0"
    }
  },
  "default_locale": "en",
  "version": "3.2.0",
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "unlimitedStorage",
    "storage",
    "activeTab",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "core/namespace.js",
        "core/config.js",
        "vendors/jquery.min.js",
        "detectors/selfcare.js",
        "indoc/browser-functions.js",
        "indoc/restore-local-storage.js",
        "indoc/reload.js",
        "indoc/runner.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ]
}