Examine source code of WordPress Admin Accelerator

{
  "manifest_version" : 3 ,
  "name" : "WordPress Admin Accelerator",
  "version" : "1.0",
  "description" : "Adds search bar to WP Menu, Toggle Admin Bar, Switch to & from the WordPress Admin",
  "permissions" : [
    "storage" ,
    "activeTab" ,
    "scripting" 
  ],
  "icons" : {
    "16" : "icon16.png",
    "48" : "icon48.png",
    "128" : "icon128.png"
  },
  "action" : {
    "default_popup" : "popup.html",
    "default_title" : "WordPress Admin Accelerator"
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "wp-admin-accelerator@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}