Merge "Ignore additional pointers in dispatchTouchEvent." into rvc-dev am: fe71adaa am: 3804d96d am: ffc87ece am: 8731e81a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12049282

Change-Id: If9c8b2328fad8c114042eeadefa2d122d65731b9