Merge "cameraservice: Migrate all internal String8/String16s to std::string" into main am: ef3122064e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2706302

Change-Id: I8a414c365fa349d701b396075fc6fd86555e0569
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>