tree 28107d07ea8259a86bd32b1e8d550daad35bfac1
parent 7e5da60e990e153c8fd5ba4e146825bb8e9a2bd4
author calderwoodra <calderwoodra@google.com> 1517602933 -0800
committer Copybara-Service <copybara-piper@google.com> 1517609864 -0800

Split MainActivity into two peers, old and new to keep logic isolated.

This change updates MainActivity to defer lifecycle callbacks and other
relevant methods to which ever peer is active, old or new.

The old peer implements the logic for the old fragments.
The new peer implements the logic for the new fragments.
MainActivity implements the logic that is shared or common between the two like
last tab, post call, search, dialpad, ect.

Bug: 72525324
Test: pending
PiperOrigin-RevId: 184317828
Change-Id: Ie73733f2a3837c9d63e54cf5b142984633340731