TextInputMapper:With Text Area

Build 1933 on improved-input-layout
Reviewing disabled
Baseline History
Build 19339142c6f
Current build. There are unaccepted changes, so build 1925 is still the baseline.
Build 1925f05f3b7 current baseline
Accepted by Andrey Yamanov.
Build 1671397e8a1
Accepted by Andrey Yamanov.
Build 16176f6be33
Accepted by Andrey Yamanov.
Build 1554932ee62
Accepted by Andrey Yamanov.
Commenting is disabled because there's a newer build on this branch