Hide Titlebar while loading InCallUI (2 of 2)

The conference call commits a few days ago caused the titlebar to
show when iniating a call during loading. These pair of commits
fix the behavior.

Change-Id: I69a915eef471b5f4ac4da087457cb50fba2e0400
Revert "InCallUI: Open source google dialer and more (2/5)"

This reverts commit 95939d958306c8d3e5440df69f2e89f54e397edc.

Change-Id: I46a9a3359cfb8df371718ea54a2d22c3cf3d0b74
Not using the PhoneNumberService API for reverse lookups anymore

Change-Id: I75c2a4f5241a5bef5fd78610758629f7543bc4da