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Chrome Apps chrome.networking.onc API not available for kiosk apps

Background

I have a Chrome Kiosk App where i would like to use the chrome.networking.onc API to let my users change WiFi networks.

My issue

There is no chrome.networking.onc API available to the app neither in the app background script or the app window while running in a kiosk session.

What I've tried

According to the chrome.networking.onc documentation it should be available to apps while in kiosk mode.

I've added networking.onc to my permissions in my app manifest.

https://developer.chrome.com/apps/networking_onc

https://developer.chrome.com/apps/declare_permissions

The kiosk app is force installed to the users Chromebooks using a G Suite Chrome device management policy.

Code example

app/manifest.json

{
  "manifest_version": 2,
  "name": "Kiosk networking.onc",
  "version": "1.0",
  "permissions": ["networking.onc"],
  "kiosk_enabled": true,
  "kiosk_only": true,
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  }
}

app/background.js

chrome.app.runtime.onLaunched.addListener(function(launchData) {
  // send a list of available chrome APIs to the app window to be displayed
  chrome.app.window.create(`window/main.html?chrome=${Object.keys(chrome).join(",")}&kiosk=${launchData.isKioskSession}`);
});

app/window/main.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Chrome app</title>
  </head>
  <body>
    <p>
      <h1>Background <code>chrome</code> object properties</h1>
      <div id="background"></div>
    </p>

    <p>
      <h1>App window <code>chrome</code> object properties</h1>
      <div id="window"></div>
    </p>

    <button id="exit">window.close()</button>
    <script src="main.js"></script>
  </body>
</html>

app/window/main.js

// display the available Chrome APIs in the background script
document.getElementById("background").innerText = window.location.search;

// display all the available Chrome APIs (accessible from the app window).
document.getElementById("window").innerText = Object.keys(chrome).join(",");

document.getElementById("exit").onclick = () => window.close()

Output while in a kiosk session (Chrome OS 77.0.3865.105)

In the image below networking cannot be found among the available APIs and if i try to access networking.onc i get the error: Uncaught TypeError: Cannot read property 'onc' of undefined

Chrome kiosk session result

Solution

  • This issue seems to be caused by a bug in Chrome OS.

    I've reported the issue in the Chromium issue tracker here: https://bugs.chromium.org/p/chromium/issues/detail?id=1012629