Wale Ogunwale 062b17a171 Rename splitscreen package to legacysplitscreen
Split-screen implementations moving forward would be based on app-pairs
and main/side stage models. So, renaming existing package to avoid
confusion.

Bug: 175416931
Test: They pass!
Change-Id: I55ab1d27fb1c00ba7a58d685ea7eb2840efb9437
2020-12-14 12:13:11 -08:00
..
2020-12-11 10:11:38 +00:00