Merge "aconfig: add java codegen test mode" am: 514f99b2

Original change: https://android-review.googlesource.com/c/platform/build/+/2638410



Change-Id: I164c75e0c0ab5e8ebdff7c9a746d4d08e4d9d3ae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>