Examine source code of NUKE position:fixed

{
  "manifest_version": 2,
  "name": "NUKE position:fixed",
  "description": "This extension removes all fixed position elements on a page.",
  "version": "1.2resigned1",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a7217102-404b-41cc-8325-22e71defae9e}"
    }
  }
}