Examine source code of DogMoneyMode

{
  "manifest_version": 2,
  "name": "DogMoneyMode",
  "version": "2.1",
  "description": "Browser extension that makes fiat prices display in Dogecoin. Works with USD, EUR, GBP, etc.",
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "styles/comic.css"
      ],
      "js": [
        "scripts/content.js"
      ],
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "dogmoneymode@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}