Multitran with no ads

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Multitran with no ads",
  "short_name": "No ads multitran",
  "version": "0.1.0",
  "description": "Remove ads from original multitran page",
  "icons": {
    "48": "no-ads-multitran-icon48.png",
    "64": "no-ads-multitran-icon64.png",
    "128": "no-ads-multitran-icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://www.multitran.ru/*",
        "https://www.multitran.ru/*",
        "http://www.multitran.com/*",
        "https://www.multitran.com/*"
      ],
      "js": [
        "contentscript.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    "contentscript.css"
  ],
  "manifest_version": 2
}