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

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

Change-Id: I4f90fb42952b4b0113816afbf94616f24d0da849
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>