Examine source code of Medoro browser extension

{
  "name": "Medoro browser extension",
  "description": "Extension for arranging web browser windows and tabs for smoother user workflow from our applications.",
  "author": "Medoro s.r.o.",
  "version": "1.1.1resigned1",
  "manifest_version": 2,
  "icons": {
    "16": "icon_16.png",
    "128": "icon_128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "contentscript.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e56dad93-58eb-4ccc-8a70-4b56778308df}"
    }
  }
}