Examine source code of GreenTabs Default Search

{
  "name": "GreenTabs Default Search",
  "description": "GreenTabs Default Search",
  "version": "1.0",
  "permissions": [],
  "background": {
    "scripts": [
      "browseraction_release.js"
    ]
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "GreenTabs",
      "keyword": "GreenTabs",
      "search_url": "https://www.greentabs.net/chrome/newtab/searchresults.aspx?src=ds&pid=greentabsdf&q={searchTerms}",
      "suggest_url": "https://www.greentabs.net/ntapi/suggestions/rd?q={searchTerms}",
      "search_url_post_params": "",
      "favicon_url": "https://www.greentabs.net/images/search.png",
      "encoding": "UTF-8",
      "is_default": true
    }
  },
  "icons": {
    "16": "img/logo_16x.png",
    "48": "img/logo_48x.png",
    "128": "img/logo_128x.png"
  },
  "manifest_version": 2
}