Delete Facebook Messages

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Delete Facebook Messages",
  "description": "This extension allows you to delete or archive all of your facebook messages in one click.",
  "version": "3.3",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "128": "icons/128.png",
    "256": "icons/256.png"
  },
  "browser_action": {
    "default_icon": "icons/256.png",
    "default_popup": "popup.html",
    "default_title": "Delete Facebook Messages"
  },
  "permissions": [
    "*://*.facebook.com/*",
    "tabs",
    "storage"
  ],
  "background": {
    "page": "background.html",
    "persistent": true
  },
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'"
}