Examine source code of Robot arm icon

{
  "manifest_version": 2,
  "name": "Robot arm icon",
  "version": "1.0",
  "description": "Robot arm icon represents: Industrial automation equipment, Industrial robots used in assembly, welding, packaging, Robotics and automation technology.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Click me!"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{096f112d-ff1b-4b73-a12e-03ef8ca5194d}"
    }
  }
}