Examine source code of Music Search pro

{
  "name": "Music Search",
  "version": "0.0.13",
  "manifest_version": 2,
  "chrome_settings_overrides": {
    "search_provider": {
      "encoding": "UTF-8",
      "is_default": true,
      "keyword": "Music Search",
      "name": "Music Search Powered by Yahoo",
      "search_url": "https://search.yahoo.com/yhs/search?hspart=iba&hsimp=yhs-3&type=msff_9373_FFW_ZZ&grd=1&p={searchTerms}",
      "suggest_url": "https://ff.search.yahoo.com/gossip?output=fxjson&command={searchTerms}"
    }
  },
  "description": "Listen to songs and albums by your favorite musicians, create playlists and discover new and exciting music. After installing Music Search, it will change your default search engine to Yahoo. It requires your permission to access data on www.gettheresult.net. Click on the music icon on your browser extensions bar to enjoy all of our features. Please read the Terms of use https://eula.gettheresult.net, and Privacy Policy https://privacy.gettheresult.net.",
  "icons": {
    "16": "icons/icon16.png",
    "38": "icons/icon38.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon38.png",
    "default_title": "Music Search",
    "default_popup": "/src/pop/index.html"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "background": {
    "page": "src/bg/background.html",
    "persistent": true
  },
  "permissions": [
    "*://*.gettheresult.net/*",
    "tabs"
  ],
  "web_accessible_resources": [
    "/icons/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8cb0dcf0-c792-4e3c-ba67-a30548c3a34f}"
    }
  }
}