Merge "Fixed inaccurate brightness slider UI" into tm-qpr-dev am: 4f33cbd6 am: 7954582e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19669170



Change-Id: I9c39a763dc6294b0526c66aca81a328a87b4ad71
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>