Stream<DeviceOrientationEvent> onDeviceOrientation

Stream of deviceorientation events handled by this Window.

Source 

@DomName('Window.ondeviceorientation')
@DocsEditable()
// http://dev.w3.org/geo/api/spec-source-orientation.html#devicemotion
@Experimental()
Stream<DeviceOrientationEvent> get onDeviceOrientation =>
    deviceOrientationEvent.forTarget(this);