Merge "RemoteViews: make bitmaps immutable" into tm-dev am: e9a0acdf am: 514038e9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17803201



Change-Id: I529b314de5f3ab11f1af1f81a9df9f94bae42822
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>