Revert "Split HeadsUpManager implementation to HeadsUpManagerPhone"

This reverts commit 78db3d0b0fd4bcae0ec92913e2b39491bffa409b.

Reason for revert: Cause crash

Test: none
Change-Id: Iffdad2513158c0856a0d3b56f7667063f4bba91c
14 files changed