Merge "Dither HDR content when compositing to an 8-bit target" into tm-dev am: a3eab26a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/17411836



Change-Id: I4a086e6955537903a52c60c2d10cb7d940f2c3eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>