Merge "Update brightness slider icon" into tm-qpr-dev am: 4e9ea06f am: ea53b2bc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20708671



Change-Id: I5b64301df5d601c8d4960d73882f6f64f8ca3e73
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>