Java APIs used by Mainline modules.

Add scripts to generate java APIs used by Mainline modules. This is
aosp/1879177 with fixed build error that caused by dexdeps analyzing
resource only APKs which doesn't contains any .dex files. Now skip the
error generates in that case in gen_java_usedby_apex.sh

Forrest run:https://android-build.googleplex.com/builds/abtd/run/L38900000951898586

Test: TARGET_BUILD_APPS=com.android.adbd m dist apps_only
Change-Id: Id539cbe1b7306ace69c047f95ffc02265a467511
diff --git a/scripts/OWNERS b/scripts/OWNERS
index 1830a18..88787cd 100644
--- a/scripts/OWNERS
+++ b/scripts/OWNERS
@@ -3,4 +3,4 @@
 per-file build-aml-prebuilts.sh = ngeoffray@google.com,paulduffin@google.com,mast@google.com
 per-file construct_context.py = ngeoffray@google.com,calin@google.com,skvadrik@google.com
 per-file conv_linker_config.py = kiyoungkim@google.com, jiyong@google.com, jooyung@google.com
-per-file gen_ndk*.sh = sophiez@google.com, allenhair@google.com
+per-file gen_ndk*.sh,gen_java*.sh = sophiez@google.com, allenhair@google.com
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