Update nullability checks to use Objects#requireNonNull
instead of deprecated method in Preconditions class

Tag: #feature
Bug: 190767948
Test: Manual
Merged-In: Ie7f7282b89c13f587fdfe1bf3288eb4a3c7dcc6e
Change-Id: Ie7f7282b89c13f587fdfe1bf3288eb4a3c7dcc6e
3 files changed