Examine source code of Disconnect Tabs

{
  "author": "igorlogius",
  "homepage_url": "https://github.com/igorlogius/disconnect-tabs",
  "description": "Change the connectivity (aka. network state) of tabs ",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {},
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "F1"
      }
    }
  },
  "icons": {
    "256": "icon.png"
  },
  "manifest_version": 2,
  "name": "Disconnect Tabs",
  "permissions": [
    "notifications",
    "menus",
    "<all_urls>",
    "webRequest",
    "webRequestBlocking"
  ],
  "version": "1.0.6",
  "browser_specific_settings": {
    "gecko": {
      "id": "{19cd6c6c-3c65-4b20-a3e9-485f878a97ca}"
    }
  }
}