Merge "Use the global default cpp_std." into main am: a51aecf7c2

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3113844

Change-Id: I22bab6b3622c17bf729cb380c70152b7d0a1b080
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>