Revert "Lock down String8|16.string() usage"

This reverts commit 8b95a1248945b8ed565d44dda2500fc5a1a0f6fb.

Reason for revert: DroidMonitor: Test failure

Change-Id: I09230ea7c3b80e1b4d277d3c6c6355a38f7bbc92
2 files changed