[jdk11u-dev] RFR: 8248306: gc/stress/gclocker/TestExcessGCLockerCollections.java does not compile

[Goetz Lindenmaier]

I backport this for parity with 11.0.19-oracle.

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Commit messages:
 - Backport 83fff054980406fa93fb17976d67fc31102a9276

Changes: https://git.openjdk.org/jdk11u-dev/pull/1744/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1744&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8248306
  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1744.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1744/head:pull/1744

PR: https://git.openjdk.org/jdk11u-dev/pull/1744