Examine source code of YouTube Comment Deletion

{
  "manifest_version": 2,
  "name": "YouTube Comment Deletion",
  "version": "1.0",
  "description": "Bulk delete YouTube comments from MyActivity.",
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "images/icon16.png",
    "default_title": "Click to go to YouTube Comments page"
  },
  "content_scripts": [
    {
      "matches": [
        "https://myactivity.google.com/page*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cd27dc3b-285f-49b7-896a-e99d210326aa}"
    }
  }
}