Examine source code of Ball Control Game

{
  "manifest_version": 2,
  "name": "Ball Control Game",
  "version": "1.0",
  "description": "Control the ball to avoid obstacles and test your reflexes.",
  "permissions": [],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d6e8aebe-e6e2-4d1c-8915-13dc03ca8b9b}"
    }
  }
}