To build and run projects for ChromeOS, you need to set up a ChromeOS development environment. Android and ChromeOS use the same Unity environment, so you can use the Android instructions to set up your development environment for ChromeOS. For information on how to set up an Android environment, refer to Android Environment Setup.
When you develop applications for ChromeOS, you can’t debug a ChromeOS application using a USB connection. As a result, you must connect to the ChromeOS device over Wifi or Ethernet using Android Debug Bridge (adb). For more information, refer to ‘Connect to a device over Wi-Fi (Android 11+).’.