Merge "RpcSession attaches/detaches JVM for Java thread" am: 487109e7bb am: c0c11cbbfd am: efecc0490d am: 11e8d58e4b

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1751413

Change-Id: I6b2ab251c2a884bb576e0f379bdc5b2cc18e3a22