Examine source code of Time_Tracker

{
  "manifest_version": 2,
  "name": "Time_Tracker",
  "version": "1.1resigned1",
  "description": "tracks time spent on the top 3 websites",
  "icons": {
    "48": "something.png"
  },
  "permissions": [
    "webRequest",
    "tabs",
    "storage",
    "unlimitedStorage"
  ],
  "browser_action": {
    "default_icon": "something.png",
    "default_title": "Time Tracker",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b25cc62c-3db1-4960-8aef-99bd3b315bc4}"
    }
  }
}