Examine source code of KARMA Search

{
  "name": "KARMA Search",
  "short_name": "KARMA",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "2.1.1",
  "manifest_version": 2,
  "permissions": [
    "cookies",
    "topSites",
    "*://*.karmasearch.org/*"
  ],
  "icons": {
    "16": "resources/icons/brand/logo.png",
    "32": "resources/icons/brand/logo.png",
    "48": "resources/icons/brand/logo.png",
    "128": "resources/icons/brand/logo.png"
  },
  "browser_action": {
    "default_icon": "resources/icons/brand/logo.png",
    "default_title": "Open a KARMA new tab"
  },
  "chrome_url_overrides": {
    "newtab": "newtab/newtab.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://karmasearch.org/"
      ],
      "js": [
        "content/content.js"
      ]
    }
  ],
  "chrome_settings_overrides": {
    "search_provider": {
      "encoding": "UTF-8",
      "favicon_url": "https://karmasearch.org/favicon.ico",
      "is_default": true,
      "keyword": "karma",
      "name": "Karma Search",
      "search_url": "https://karmasearch.org/search?q={searchTerms}&origin=firefox_ext&method=topbar",
      "suggest_url": "https://api.karmasearch.org/search/autosuggest?q={searchTerms}"
    }
  },
  "web_accessible_resources": [
    "resources/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bbfb1a46-37a0-415c-baf4-f2c42778ab43}"
    }
  }
}