Examine source code of Resume Icon

{
  "manifest_version": 2,
  "name": "Resume Icon",
  "version": "1.0",
  "description": "A resume icon is an icon that represents a personal profile or CV a document that summarizes a person's personal information, education, experience, and skills.",
  "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": "{a16bd755-db82-4816-8e98-70cdda22c50d}"
    }
  }
}