Merge "cronet: Fix remaining MissingNullability API linter issue" am: a0076a08b2 am: dea72e7643

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2468862

Change-Id: Ia645ac83a77e1ecd9f884517f9f0cdf39f6cc851
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>