Examine source code of NikoBlock - Adblock for Youtube

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "2.0",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.min.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "image/logo-gray/16x16.png",
      "24": "image/logo-gray/24x24.png",
      "32": "image/logo-gray/32x32.png",
      "48": "image/logo-gray/48x48.png",
      "64": "image/logo-gray/64x64.png",
      "128": "image/logo-gray/128x128.png",
      "256": "image/logo-gray/256x256.png",
      "512": "image/logo-gray/512x512.png"
    },
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "https://*.youtube.com/*"
  ],
  "icons": {
    "16": "image/logo/16x16.png",
    "24": "image/logo/24x24.png",
    "32": "image/logo/32x32.png",
    "48": "image/logo/48x48.png",
    "64": "image/logo/64x64.png",
    "128": "image/logo/128x128.png",
    "256": "image/logo/256x256.png",
    "512": "image/logo/512x512.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "js": [
        "content.min.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "main.min.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{dc417bbf-56bd-4d0d-b84f-abdfea1e284b}"
    }
  }
}