Examine source code of Pacman Popup

{
  "browser_action": {
    "default_icon": {
      "16": "app/style/graphics/16.png",
      "32": "app/style/graphics/32.png",
      "48": "app/style/graphics/48.png",
      "64": "app/style/graphics/64.png",
      "128": "app/style/graphics/128.png"
    },
    "default_popup": "index.html",
    "default_title": "Pacman"
  },
  "description": "A Pacman game on a popup",
  "developer": {
    "name": "angelo2008"
  },
  "icons": {
    "16": "app/style/graphics/16.png",
    "32": "app/style/graphics/32.png",
    "48": "app/style/graphics/48.png",
    "64": "app/style/graphics/64.png",
    "128": "app/style/graphics/128.png"
  },
  "manifest_version": 2,
  "name": "Pacman Popup",
  "version": "1.0.6",
  "offline_enabled": false,
  "options_ui": {
    "chrome_style": false,
    "open_in_tab": false,
    "page": "options.html"
  },
  "author": "Schmextensions"
}