Examine source code of DogDog.com - Search to win $250 for your dog

{
  "name": "DogDog.com - Search to win $250 for your dog",
  "description": "Search to earn raffle tickets to win $250 for your adopted dog - for free!",
  "homepage_url": "https://www.dogdog.com",
  "chrome_settings_overrides": {
    "search_provider": {
      "encoding": "UTF-8",
      "favicon_url": "https://www.dogdog.com/favicon.ico",
      "is_default": true,
      "keyword": "dogdog",
      "name": "DogDog.com",
      "search_url": "https://www.dogdog.com/search?term={searchTerms}"
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "favicon-16.png",
      "48": "favicon-48.png",
      "96": "favicon-96.png",
      "128": "favicon-128.png"
    },
    "default_title": "DogDog.com - Search to win $250 for your adopted dog"
  },
  "icons": {
    "16": "favicon-16.png",
    "48": "favicon-48.png",
    "96": "favicon-96.png",
    "128": "favicon-128.png"
  },
  "applications": {
    "gecko": {
      "id": "dogdog-raffle@goodshop.com",
      "strict_min_version": "57.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.dogdog.com/*"
      ],
      "js": [
        "js/content-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "cookies",
    "*://*.dogdog.com/*"
  ],
  "manifest_version": 2,
  "version": "1.0.5"
}