Examine source code of HTML Comments

{
  "manifest_version": 2,
  "name": "HTML Comments",
  "version": "1.0",
  "description": "Lists the comments of a page",
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "view.js"
    ]
  }
}