Examine source code of CMF Client Web Extension

{
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "homepage_url": "https://www.croc.ru/",
  "description": "__MSG_extDescription__",
  "default_locale": "ru",
  "permissions": [
    "activeTab",
    "nativeMessaging",
    "storage"
  ],
  "icons": {
    "48": "icons/active-48.png",
    "128": "icons/active-128.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "js/content-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "js/cmf-client-extension-api.js"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "48": "icons/active-48.png",
      "128": "icons/active-128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true,
    "chrome_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "cmf-client-ext@croc.ru",
      "strict_min_version": "78.0"
    }
  },
  "version": "1.0.5",
  "version_name": "1.0.5"
}