RFR: 8221451: PIT: sun/java2d/X11SurfaceData/SharedMemoryPixmapsTest/SharedMemoryPixmapsTest.sh fails [v2]

[Phil Race]

> This test would fail with Xrender. But it did odd things like sleep in the paint method.
> When I fixed that it started to pass every time.
> It also had a problem listing for macOS supposedly for edge pixels.
> I didn't see that myself but I changed it to not sample the edges.

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8221451

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27400/files
  - new: https://git.openjdk.org/jdk/pull/27400/files/f807f0cd..7afb6f38

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27400&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27400&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27400.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27400/head:pull/27400

PR: https://git.openjdk.org/jdk/pull/27400