Merge "Backport implementation of AltitudeConverter to T." am: 7ac0b50c9a am: 7c96532a66

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2420963

Change-Id: Ie93da42f1cc97394bd66be288bd6f6726b3efcde
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>