[automerger skipped] Make Activites touch opaque - DO NOT MERGE am: 73ee4cb9c4 am: cbcfab9bbe -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21611410

Change-Id: Ia0981b8b4e229e3d6b6280a440f8b10ae32e7c4a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>