gn2bp: Generate `JniProcessor` manually am: 3d3d6136f8

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2327970

Change-Id: Ief350d6f1056581abd092a1c2eabf30e16f39577
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>