Examine source code of myJDoc

{
  "manifest_version": 2,
  "name": "myJDoc",
  "description": "Extension for automatically changing to a selected JavaDocs version",
  "version": "1.2",
  "content_scripts": [
    {
      "matches": [
        "*://docs.oracle.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "myJDoc",
    "default_icon": {
      "128": "icon.png"
    }
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "128": "icon.png"
  }
}