Examine source code of Logalarm Activity Tracker

{
  "manifest_version": 2,
  "name": "Logalarm Activity Tracker",
  "version": "1.2",
  "description": "Tracks the active tab and its usage duration.",
  "permissions": [
    "webRequest",
    "tabs",
    "windows"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "incognito": "spanning",
  "applications": {
    "gecko": {
      "id": "logalarm@ankarabilisim.org",
      "strict_min_version": "60.0"
    }
  }
}