[jdk11u-dev] RFR: 8159694: HiDPI, Unity, java/awt/dnd/DropTargetEnterExitTest/MissedDragExitTest.java

[Goetz Lindenmaier]

I backport this for parity with 11.0.16-oracle.

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Commit messages:
 - Backport c3938ec18b4026d70d9654235dcd986d90344f5b

Changes: https://git.openjdk.org/jdk11u-dev/pull/1147/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=1147&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8159694
  Stats: 11 lines in 3 files changed: 6 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1147.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1147/head:pull/1147

PR: https://git.openjdk.org/jdk11u-dev/pull/1147