Examine source code of Cat & Dog Video Tab

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.0.0",
  "description": "__MSG_extensionDescription__",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f01cdb8a-ac60-4605-85f2-bd43468dc4b1}"
    }
  }
}