Examine source code of Chetu Adblocker

{
  "name": "Chetu Adblocker",
  "version": "1.0",
  "author": "Chetu India",
  "description": "Chetu Adblocker URL Blocking Extension : Use to block the chetu advertisement URL's!",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "webNavigation",
    "*://*/*",
    "http://*/*",
    "https://*/*",
    "storage",
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/chetu_logo.png",
    "48": "icons/chetu_logo.png",
    "128": "icons/chetu_logo.png"
  },
  "manifest_version": 2
}