Merge "Dither HDR content when compositing to an 8-bit target" into tm-dev am: a3eab26a am: 61e0ae6c

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



Change-Id: I2d578b7820e802a8f4af1d19e8ba4b60f35475e6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>