RFR: 8369335: Two sun/java2d/OpenGL tests fail on Windows after JDK-8358058

[Phil Race]

Update two tests which fail on Windows hi-dpi fractional scaling, when using OpenGL with some accelerated graphics.
Details in the JBS issue

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Commit messages:
 - 8369335

Changes: https://git.openjdk.org/jdk/pull/27761/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27761&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369335
  Stats: 38 lines in 2 files changed: 18 ins; 0 del; 20 mod
  Patch: https://git.openjdk.org/jdk/pull/27761.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27761/head:pull/27761

PR: https://git.openjdk.org/jdk/pull/27761