tree a508d48f1015e23faf94ab0167409e4b179bd950
parent 20cac9dabf120be176e4247fefe14dc01e971548
author mschaller <mschaller@google.com> 1555451972 -0700
committer Copybara-Service <copybara-worker@google.com> 1555452130 -0700

Mark the context parameter nullable in NotifyingHelper.Listener#accept

For the ADD_REVERSE_DEP type (amongst others), context may be null.

Drive-by cleanup of one location where Listener.NULL_LISTENER could be
used.

RELNOTES: None.
PiperOrigin-RevId: 243885677