Examine source code of Chatwork Quick Info Input

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDescription__",
  "version": "3.0.8",
  "short_name": "__MSG_appShortName__",
  "manifest_version": 3,
  "default_locale": "ja",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e24e188a-7366-4d3d-a4ab-8580a8537f0c}"
    }
  },
  "icons": {
    "16": "images/icon_16.png",
    "48": "images/icon_48.png",
    "128": "images/icon_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.chatwork.com/*",
        "*://chatwork.com/*",
        "*://kcw.kddi.ne.jp/*"
      ],
      "js": [
        "scripts/contentscript.js"
      ]
    }
  ]
}