Examine source code of Twitter Fucklytics

{
  "manifest_version": 2,
  "name": "Twitter Fucklytics!",
  "version": "1.0.1",
  "description": "Hides Twitter analytics buttons.",
  "icons": {
    "16": "icons/icon_16.png",
    "32": "icons/icon_32.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*",
        "https://mobile.twitter.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "fucklytics.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9f65eb59-975c-41f9-a33d-0158097e711f}"
    }
  }
}