Replace proxy class names with deterministic ones for test output.

This should avoid potentially flaky test failures in 005-annotations
and 044-proxy.

(cherrypick commit bc7f8080d1f5d0138cb83cba73a747d43d62c23c)

Bug: 25838574
Bug: 12687968

Change-Id: I08765abd82e41258ce4d1d8bb9dffce70c8b6689
6 files changed