Examine source code of Anti YT

{
  "name": "Anti YT",
  "version": "0.1.3resigned1",
  "description": "Stop using youtube as much and be productive!",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "page_action": {
    "default_popup": "popup.html",
    "show_matches": [
      "https://*.youtube.com/*"
    ],
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "js": [
        "contentScripts/youtube.js"
      ],
      "css": [
        "css/youtube.css"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "activeTab",
    "https://i.ytimg.com/vi/*",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "images/*"
  ],
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{94086536-6090-42bd-a419-0771b1ce7f57}"
    }
  }
}