Examine source code of Extension Hexagone Web

{
  "name": "Extension Hexagone Web",
  "version": "1.0.9",
  "manifest_version": 2,
  "description": "Extension Hexagone Web",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "page_action": {
    "default_icon": {
      "16": "images/hexagone_green_16.png",
      "32": "images/hexagone_green_32.png",
      "64": "images/hexagone_green_64.png"
    },
    "show_matches": [
      "https://*/hexagone-*/*",
      "https://*/hexaweb-*/*",
      "http://localhost:9000/*"
    ]
  },
  "permissions": [
    "nativeMessaging",
    "downloads"
  ],
  "background": {
    "scripts": [
      "scripts/main.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/hexagone-*/*",
        "https://*/hexaweb-*/*",
        "http://localhost:9000/*"
      ],
      "js": [
        "scripts/contentScript.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hwextension@hexagone.com",
      "strict_min_version": "70.0"
    }
  }
}