Examine source code of Breakout game Fun

{
  "manifest_version": 2,
  "name": "Breakout game Fun",
  "version": "1.0",
  "description": "Breakout game html is a classic game in which the player controls a wooden stick to hit the ball and break blocks.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/bre-logo.png"
    }
  },
  "icons": {
    "128": "images/bre-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fea88c60-7825-420a-9ec2-25add1f27537}"
    }
  }
}