[automerger skipped] Merge "Remove String16::makeLower()." am: c33f57b7 am: d5da89bd am: dc7776d8 -s ours

am skip reason: skip tag Change-Id I4a864823ec35a0b57b50909587cc3efac3f531a7 with SHA-1 49cb0321 is already in history

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1666087

Change-Id: I40fb1bbeb8b5f6fce09de65008458f3f6313a40f