Merge "Move tombstone_proto_to_text out of libdebuggerd." into main am: 73ade161

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2836598



Change-Id: I6bc891876d48b01fa879f9a59ee0e04ef9c23f77
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>