Examine source code of Minesweeper Popup

{
  "manifest_version": 2,
  "name": "Minesweeper Popup",
  "version": "1.0",
  "browser_action": {
    "default_icon": "icons/minesweeper-bomb.jpg",
    "default_title": "Minesweeper"
  },
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}