Move user file along to the new package name am: 578c0d3186 am: 5a108daef8

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

Change-Id: Idc4abefd95e20d0ef46c66456b621edc41612823
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>