Examine source code of Onion.Live

{
  "manifest_version": 2,
  "name": "Onion.Live",
  "version": "0.1",
  "applications": {
    "gecko": {
      "id": "admin@onion.live",
      "strict_min_version": "59.0a1"
    }
  },
  "description": "Uses onion.live service to warn against phishing URLs and provide a list of safe .onion mirrors for your favorite deepweb / darknet services.",
  "icons": {
    "48": "icons/logo.png"
  },
  "permissions": [
    "<all_urls>",
    "notifications",
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "32": "icons/logo.png"
    },
    "default_title": "Onion Live",
    "default_popup": "popup/popup.html",
    "browser_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./verify.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "settings/options.html"
  }
}