Examine source code of Linkify-Chrome

{
  "manifest_version": 2,
  "name": "Linkify",
  "version": "1.0",
  "description": "Ctrl+Right-click to open link in Chrome",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "permissions": [
    "nativeMessaging"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "open-in-chrome@local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}