[jdk11u-dev] RFR: 8317228: GC: Make TestXXXHeapSizeFlags use createTestJvm [v3]

[Andrew Lu]

> I backport this for parity with 11.0.25-oracle.

Andrew Lu has updated the pull request incrementally with one additional commit since the last revision:

  remove "@key gc"

-------------

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/2864/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/2864/files/bfa4783b..0b72b6fd

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2864&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2864&range=01-02

  Stats: 2 lines in 2 files changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2864.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2864/head:pull/2864

PR: https://git.openjdk.org/jdk11u-dev/pull/2864