Live Custom CSS,JS injector on pages

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "css": [
        "css/ga.css",
        "lib/codemirror.js"
      ],
      "js": [
        "js/ga.js",
        "js/css.js",
        "lib/codemirror.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "description": "Live CSS JS/ Realtime CSS JS style will be added to the page for temprory. To test the style change. How it reflect on page reload.",
  "manifest_version": 2,
  "name": "Live Custom CSS,JS injector on pages",
  "permissions": [
    "storage",
    "tabs"
  ],
  "short_name": "live css js injector",
  "version": "2.0.2",
  "web_accessible_resources": [
    "script.js"
  ]
}