Merge "cronet: Fix remaining MissingNullability API linter issue" am: a0076a08b2 am: ae0d775d01

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

Change-Id: I9bea32cc4eaa81e1902b8047e4824e536f374723
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>