RFR: 8277423: ciReplay: hidden class with comment expected error

[Dean Long]

Refactor code to dump hidden classes consistently.

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Commit messages:
 - refactor to dump hidden classes consistently

Changes: https://git.openjdk.java.net/jdk/pull/6467/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6467&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8277423
  Stats: 29 lines in 3 files changed: 18 ins; 9 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6467.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6467/head:pull/6467

PR: https://git.openjdk.java.net/jdk/pull/6467