Examine source code of Video Blocker

{
  "manifest_version": 2,
  "name": "Video Blocker",
  "version": "1.0.2resigned1",
  "description": "Hide not relevant videos for you from youtube",
  "icons": {
    "48": "icons/VideoBlocker.png"
  },
  "browser_action": {
    "default_icon": "icons/VideoBlocker.png",
    "default_title": "Video Blocker",
    "default_popup": "settings/index.htm"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f8a7f939-f051-4028-96d1-196b1851cfee}"
    }
  }
}