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
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0