Penguins

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "browser_action": {
    "default_icon": "penguins.png",
    "default_popup": "popup.html",
    "default_tooltip": "Penguins"
  },
  "description": "Moving penguins, Flash by Adam Bowman.",
  "icons": {
    "16": "16.png",
    "48": "48.png",
    "64": "64.png",
    "128": "128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "manifest_version": 2,
  "name": "Penguins",
  "offline_enabled": true,
  "version": "0.0.2.0",
  "content_security_policy": "script-src 'self' 'unsafe-eval' blob: filesystem: chrome-extension-resource:; object-src 'self'"
}