Analysis extra.google_vr (ANALYSIS_VERSION 20): manifest DAYDREAM/CARDBOARD
categories, enableVrMode=com.google.vr.vrcore, libgvr.so / Cardboard SDK libs,
GVR Java classes, Unity vr-device-list (not libgvraudio.so, which Quest games
ship too). A build without Oculus support gets a warning (recipe notes, CLI,
game page); never unsupported from the manifest. Triage gvr-not-supported for
Unity's 'Google VR Error', the bridge's missing CardboardViewNativeImpl and
VrCore binds. PLAYBOOK row, tests.
