Examine source code of Vaultic

{
  "manifest_version": 2,
  "name": "Vaultic",
  "description": "The most secure password manager available",
  "version": "1.0.0",
  "short_name": "Vaultic",
  "icons": {
    "16": "icon/icon.png",
    "48": "icon/icon.png",
    "128": "icon/icon.png"
  },
  "permissions": [
    "storage",
    "https://*.vaulticserver.vaultic.co/*",
    "https://vaultic-sts.vaulticserver.vaultic.co/*"
  ],
  "web_accessible_resources": [
    "icon/icon.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "authenticationInfo"
        ]
      },
      "id": "{5cf5fb23-529c-4710-9eeb-66339dfff7b4}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Default Popup Title",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}