[jdk11u-dev] RFR: 8234802: [TESTBUG] Test Right Mouse Button Drag Gesture Recognition in all the platforms

[Goetz Lindenmaier]

I downport this for parity with 11.0.13-oracle.

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Commit messages:
 - Backport 24232989ba11778bfe8ea8f5f7b205b955bcb3b1

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/393/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=393&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8234802
  Stats: 175 lines in 1 file changed: 175 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/393.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/393/head:pull/393

PR: https://git.openjdk.java.net/jdk11u-dev/pull/393