Avoid char[] allocation for new String(byte[], ISO_8859_1) am: 15294fe689 am: 388ca8ea9d am: d164d10708 am: ce8c086989 am: 549f7d6831

Original change: https://android-review.googlesource.com/c/platform/art/+/2234648

Change-Id: I5a5cffbbda90acb94bc9679aad76434d5771032a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>