Move user file along to the new package name am: 578c0d3186

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libcxx/+/19037861

Change-Id: I534506ce9d41fe7df9f994269c9d8a99f985666c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>