Custom Background Facebook Theme

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "background": {
    "scripts": [
      "js/analytics.js",
      "js/jquery.js",
      "js/core.js",
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "logo.png",
    "default_popup": "popup.html",
    "default_title": "Custom Background Facebook Theme"
  },
  "content_scripts": [
    {
      "all_frames": false,
      "css": [
        "css/content.css",
        "css/bg1.css",
        "css/bg2.css"
      ],
      "js": [
        "js/jquery.js",
        "js/content.js"
      ],
      "matches": [
        "https://*.facebook.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "description": "Easiest way to change your Facebook background. More than 100+ free background image available.",
  "icons": {
    "16": "logo16.png",
    "48": "logo48.png",
    "128": "logo128.png"
  },
  "manifest_version": 2,
  "name": "Custom Background Facebook Theme",
  "permissions": [
    "tabs",
    "https://*.facebook.com/*",
    "https://*.fbion.com/*"
  ],
  "short_name": "Custom Background Facebook Theme",
  "web_accessible_resources": [
    "/images/*.png",
    "/images/*.jpg"
  ],
  "version": "2.0.4",
  "version_name": "2.0.4"
}