base

Fix guts are not bound properly.

When binding importance to guts, applying findViewById
to ExpandableNotificationRow of group's parents could
cause to return the reference of child notications's guts
which also has the same id. As a result guts are
not bound properly, and show weird guts.

Fixes: 29452827
Change-Id: Iaf8ee74b988bf41680857e9c3c3ae9e3bd8e4e1b