Merge "Revert "Remove unused String8::setPathName."" am: 615bf4ef14 am: 01f3306b69 am: 2cca5cc992

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1768145

Change-Id: I9eb161676ecb73ba75d08b7d49b8305bf12455ab