Hide Titlebar while loading InCallUI (1 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: Id1b1f68315c5534d6a368084c89eef08eebd39f5
[1/2] Remove Google Reverse Lookup: Auth may violate terms of service

Change-Id: I2055770a43163cb2020daec6707fd45f0577584b
New API

Change-Id: I0822407bb808382da56146ecf7e52cacb7cb8613
C-RoMize