Examine source code of Calculus Password Vault

{
  "manifest_version": 2,
  "name": "Calculus Password Vault",
  "description": "Site-aware Calculus password copy and Magento Admin SSO.",
  "version": "0.1.27",
  "icons": {
    "16": "icons/active-16.png",
    "32": "icons/active-32.png",
    "48": "icons/active-48.png",
    "128": "icons/active-128.png"
  },
  "browser_action": {
    "default_title": "Calculus Password Vault",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/inactive-16.png",
      "32": "icons/inactive-32.png",
      "48": "icons/inactive-48.png",
      "128": "icons/inactive-128.png"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "https://*/*",
    "http://*/*",
    "https://webapp.findesolutions.co.uk/*",
    "http://localhost/*",
    "http://127.0.0.1/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://webapp.findesolutions.co.uk/*",
        "http://localhost/*",
        "http://127.0.0.1/*"
      ],
      "js": [
        "webapp-bridge.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "inline-vault.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "icons/active-16.png"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "quick-access@cssmanagement.findesolutions.co.uk",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity",
          "websiteActivity"
        ]
      },
      "strict_min_version": "140.0"
    }
  }
}