Examine source code of Switch to Incognito

{
  "manifest_version": 2,
  "name": "Switch to Incognito",
  "version": "1.0",
  "description": "Switch to Incognito the current tab",
  "page_action": {
    "default_icon": "images/appicon.png",
    "browser_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "js/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "icons": {
    "16": "images/appicon.png",
    "32": "images/appicon.png",
    "48": "images/appicon.png"
  }
}