Revert "PiP: support direct entering split from PiP."

Revert "Update PiP signatures"

Revert submission 16190721-pip-enter-split

Reason for revert: regression b/205639175
Reverted Changes:
I62d1617c1:Update PiP signatures
I0829c910b:PiP: support direct entering split from PiP.

Change-Id: I52fe160c50747a00e1d30b072ce07e67dae9c6de
16 files changed