commit 3baa1f56553b3ab3a5b23f505c1e3b8b325eb253
author Colin Cross <ccross@android.com> Fri Aug 04 16:39:05 2017 -0700
committer Colin Cross <ccross@android.com> Fri Aug 04 16:43:42 2017 -0700
tree 42e4ce81fa474598d22da495de90c48f5e7cd2fc
parent c09a6b76e7c26c3bbef5f6d84ac4227a6c3ce1ca

Use class retention for VisibleForTesting annotations

The VisibleForTesting annotations are used by proguard to prevent
stripping code that is needed at runtime for tests.  The annotations
were marked with source retention, which worked fine with Jack's
proguard implementation.  When we switched back to javac + proguard,
the VisibleForTesting annotations are gone by the time proguard
sees the classes, so the annotated classes and methods can still
be stripped.

Move the VisibleForTesting annotation to class retention, which
matches guava's equivalent annotation.

Bug: 64365384
Test: m -j MtpDocumentsProvider &&
      javap -cp out/target/common/obj/APPS/MtpDocumentsProvider_intermediates/classes-proguard.jar com.android.mtp.MtpRoot

Change-Id: I63a467c2f0a21383eb9e4c9563fd6de2d994a373