Examine source code of TMS Dialer

{
  "manifest_version": 2,
  "name": "tAPP",
  "version": "2.1resigned1",
  "icons": {
    "48": "icon2.png"
  },
  "background": {
    "scripts": [
      "ClickToDial.js"
    ]
  },
  "permissions": [
    "webNavigation",
    "*://*/*"
  ],
  "browser_action": {
    "default_icon": "icon2.png",
    "default_title": "tAPP : Click To Enable"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bd0057b2-8fde-4910-92b1-821a12696817}"
    }
  }
}