Fix contrast levels of outline and outline_variant am: 35fff40d am: 6466ca7e am: ce4558b5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23441271



Change-Id: I7adc814f0918e1bb4ee799154cedc265adb1b4de
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>