Examine source code of YouTube Channel Blocker

{
  "manifest_version": 2,
  "name": "YouTube Channel Blocker",
  "description": "Blocks YouTube Channels based on user definded lists",
  "version": "0.2",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "16.png",
    "32": "32.png",
    "48": "48.png",
    "64": "64.png",
    "96": "96.png",
    "128": "128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "script.js"
      ]
    }
  ]
}