Examine source code of Youtube AntiTrash

{
  "manifest_version": 2,
  "name": "Youtube AntiTrash",
  "version": "1.1",
  "description": "Youtube ads cleaner",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://*.youtube.com/*",
    "*://*.youtu.be/*",
    "*://tpc.googlesyndication.com/*",
    "*://*.doubleclick.net/*"
  ],
  "background": {
    "scripts": [
      "intercept.js"
    ]
  }
}