Examine source code of Domain History Delete

{
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "description": "Gives a popup to list and delete history on a domain.",
  "homepage_url": "https://github.com/nabendu82/DomainHistoryDelete",
  "page_action": {
    "default_title": "History delete",
    "default_popup": "history.html",
    "default_icon": "icons/logo_64.png"
  },
  "icons": {
    "32": "icons/logo_32.png",
    "48": "icons/logo_48.png",
    "64": "icons/logo_64.png"
  },
  "permissions": [
    "activeTab",
    "history",
    "tabs"
  ],
  "manifest_version": 2,
  "name": "Domain History Delete",
  "version": "1.1resigned1",
  "browser_specific_settings": {
    "gecko": {
      "id": "{b9bfa97d-9388-4351-aa6b-13ee308fddc0}"
    }
  }
}