Examine source code of Hide Facebook Videos

{
  "manifest_version": 2,
  "name": "Hide Facebook Videos",
  "version": "1.0",
  "description": "This extension hides the Videos section on Facebook.",
  "icons": {
    "48": "icons/icon.png"
  },
  "permissions": [
    "https://www.facebook.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.facebook.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f402d4b-7353-49c9-89d8-689acea06272}"
    }
  }
}