No longer export CallSubjectDialog am: 380a088b2d am: d27d9728e6 am: 2ed5ddac8f am: e7139d8be1 am: 381a8d2731 am: c5a7f6b048

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Dialer/+/17034408

Change-Id: Id9118f4fa2e3c15f9dd1f1bd879344dc1599d760