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

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



Change-Id: I9510ea33173c144edb39642f579dcb6469c77eba
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>