Examine source code of Open Comments Plus

{
  "manifest_version": 2,
  "name": "OpenComments",
  "description": "Post a comment on any website. Own the Web. Make your voice heard.",
  "default_locale": "en",
  "version": "3.0.36",
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqJH+Zv5t1Hf8vtf5p94/KYn+KvFWvzaaPxStsC0D20AZIPQOgOZRbUoJjbKIejsjaL/FjlL5twahTHksIbr2CSP9dg7mID48z06B5MffSdwFi6LxKunabIlPht6Km8tBmTQz56js0g0MyiO8E+CSabW3kua7ZB8hl6CGaZi1QGw1gLXZl2x8Zs8CdDvbjn0EnMqWQMfq5b18SyNaP+zyBCarMGnFaR9uQaaiINUhhNUAiAzIASk2M3SBUCOKiveNv2TubglnjwlMcvo6OmvgucweS9ujugpbUAepNgPwK3rP54Nz7Cn12SYhM1wbSGI6l4DjuoP9N5/3IMLtA5V+pwIDAQAB",
  "oauth2": {
    "client_id": "844088689700-ecbs8l06qenjsa82mvf0vh8hbr5ohnv8.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/userinfo.email",
      "https://www.googleapis.com/auth/userinfo.profile"
    ]
  },
  "icons": {
    "16": "logo/16.png",
    "24": "logo/24.png",
    "32": "logo/32.png",
    "48": "logo/48.png",
    "128": "logo/icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://opencomments-4e86d.web.app/*"
      ],
      "js": [
        "inject/main.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "logo/icon.png",
    "content/index.css",
    "anonymous.jpg"
  ],
  "browser_action": {
    "default_title": "OpenComments Popup",
    "default_icon": "logo/no_msgs.png"
  },
  "permissions": [
    "scripting",
    "activeTab",
    "tabs",
    "storage",
    "notifications",
    "contextMenus",
    "identity",
    "identity.email"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a098bf68-2b87-4efc-b4fe-9d75b2ac34cf}"
    }
  }
}