Examine source code of tabburi

{
  "manifest_version": 2,
  "name": "tabburi",
  "version": "1.2.0",
  "description": "Tab management browser extension.",
  "permissions": [
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "browser_action": {
    "default_title": "tabburi",
    "default_popup": "htmls/window.html"
  },
  "icons": {
    "96": "icons/border-96.png",
    "128": "icons/border-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c2af3ac-870b-4cc3-84b7-77f9d96e0339}"
    }
  }
}