I want to change to monocular (single-lens) mode in Google VR SDK for Unity v.1.5.0 or later.

I would like to build it in single-lens (single-lens) mode for children.

With Google VR SDK for Unity v1.40 and earlier, we were able to change the flag of GvrViewerMain to monocular by setting it as follows:

VRModeEnabled=false

However, in v1.50 and later, GvrViewerMain is replaced by GvrEditorEmulator and no flag is found to change to monocular.

How can I build (Android) in monocular mode?