Examine source code of Activity Tracker

{
  "manifest_version": 2,
  "name": "Activity Tracker",
  "description": "Track your social occurence track your clicks, track your scrolling.",
  "version": "1.1resigned1",
  "background": {
    "scripts": [
      "lib/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "lib/content-script.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a4131071-28d9-4ffe-b2c1-8a9312b7ee97}"
    }
  }
}