Merge "Create an empty String8 to cause the first allocation" am: 896cdca9...

Merge "Create an empty String8 to cause the first allocation" am: 896cdca9 am: 908b95cf am: 6972d3c2

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2186419



Change-Id: Ifac18f6535b33937c18f12526bf6b40b00350003
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>