Examine source code of Whiteboard

{
  "manifest_version": 2,
  "name": "Whiteboard",
  "version": "1.2resigned1",
  "description": "Your Whiteboard, basically a text-editor which will remember its content.",
  "icons": {
    "48": "whiteboard.png"
  },
  "background": {
    "scripts": [
      "whiteboard.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "whiteboard.png",
      "38": "whiteboard.png"
    },
    "default_title": "Your Whiteboard"
  },
  "applications": {
    "gecko": {
      "id": "whiteboard_varunon9@alley.com"
    }
  }
}