Examine source code of Request Password

{
  "manifest_version": 2,
  "name": "Request Password",
  "description": "Generate A Password In An Instant!",
  "version": "1.1",
  "icons": {
    "128": "images/icons/generatemypass.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "offline_enabled": true,
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "browser_action": {
    "default_title": "Generate my Password",
    "default_icon": "images/icons/Generate-My-Password-Icon.png"
  }
}