Examine source code of VersaTrial

{
  "name": "VersaTrial",
  "description": "Helping sites re-imagine their workflow across different technology platforms.",
  "version": "1.13.14",
  "manifest_version": 2,
  "chrome_url_overrides": {
    "newtab": "/pages/newtab/index.html"
  },
  "icons": {
    "16": "/img/icons/16.png",
    "32": "/img/icons/32.png",
    "48": "/img/icons/48.png",
    "128": "/img/icons/128.png"
  },
  "background": {
    "scripts": [
      "/js/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "https://*/*"
      ],
      "js": [
        "/js/launcher.js"
      ]
    },
    {
      "run_at": "document_start",
      "all_frames": true,
      "matches": [
        "https://app.versatrial.io/*"
      ],
      "js": [
        "/js/app_content.js"
      ]
    }
  ],
  "options_ui": {
    "page": "/pages/options/index.html",
    "open_in_tab": false
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "web_accessible_resources": [
    "*"
  ],
  "browser_action": {
    "default_popup": "/pages/popup/index.html",
    "default_icon": {
      "16": "/img/icons/16.png",
      "32": "/img/icons/32.png",
      "48": "/img/icons/48.png",
      "128": "/img/icons/128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{42be6ab4-95e6-4714-a299-6c70ea8ba01d}"
    }
  }
}