Spoke to ericrk@ again about this today. On Android we currently don't do any caching of shaders on disk at all. This is due to numerous reasons, one being that the framework already has a disk cache, but at least we don't need to block enabling oop-r on Android on this.
Another thing that we do need to look at for Android also is shader translation via ANGLE which is used on Android too.
Comment 1 by enne@chromium.org
, May 8 2018