[automerger skipped] Support dispatchNullEvent virtual method am: 1315f110...

[automerger skipped] Support dispatchNullEvent virtual method am: 1315f110 am: 482802a7 am: 4d15ebfb -s ours

am skip reason: Change-Id Iac1f8eafc4d25a5a7c8b6d8eed3f6686705fc2fb with SHA-1 5f5c78e2 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12326214

Change-Id: Idffbd1d436cd2cece83da3fdfc608cf2bbd63331