Chrome NPAPI Replacement

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Chrome NPAPI Replacement",
  "description": "Chrome injects Javascript into dummy.html",
  "version": "1.0.4",
  "icons": {
    "16": "servechrome-16.png",
    "128": "servechrome-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "file:///C:/fehr/serve/dummy.html"
      ],
      "js": [
        "inject.js"
      ],
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_icon": "servechrome-16.png",
    "default_title": "Communication by injection"
  },
  "permissions": [
    "nativeMessaging",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "externally_connectable": {
    "matches": []
  }
}