Examine source code of SSL Server Test

{
  "manifest_version": 2,
  "name": "SSL Server Test",
  "short_name": "ssl-server-test",
  "description": "Quickly scan a site with several server test services such as Mozilla Observatory and Qualys SSL Labs.",
  "version": "2.21.0",
  "icons": {
    "80": "icons/80x80.png"
  },
  "browser_action": {
    "default_title": "SSL Server Test",
    "default_popup": "badge/popup.html",
    "default_icon": {
      "80": "icons/80x80.png"
    }
  },
  "background": {
    "scripts": [
      "utils/common.js",
      "utils/utils.js",
      "context-menu/context-menu.js"
    ]
  },
  "permissions": [
    "activeTab",
    "contextMenus"
  ]
}