Examine source code of Laser icon

{
  "manifest_version": 2,
  "name": "Laser icon",
  "version": "1.0",
  "description": "The laser beam symbol is a symbol used to indicate a laser emitting device or an area containing/operating with laser radiation.",
  "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": "{cf297c47-7c20-4f83-9926-6ab2d7146cfc}"
    }
  }
}