Merge "Suppress R8 warnings for kept bootclasspath classes" into main am: 5acb946a am: 05aa4bd6

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3216613



Change-Id: I9c22f67fc59e7c913729fe8d3599ba3d9f50136e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>