Examine source code of Browsing WatchDog

{
  "manifest_version": 2,
  "name": "Browsing WatchDog",
  "version": "3.0",
  "description": "Helps you to streamline your browsing habits.",
  "icons": {
    "48": "icons/watchdog-48.png"
  },
  "developer": {
    "name": "Balakrishnan Rajkumar",
    "url": "https://github.com/messagetobala/"
  },
  "permissions": [
    "webNavigation",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "broswing-watchdoc-smkeynote@gmail.com"
    }
  }
}