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

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

Change-Id: Ic71d8dae3ad31582771a0e6bbfe8a40b3920ec07
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>