RFR: 8339906: Open source several AWT focus tests - series 4 [v6]

[Prasanta Sadhukhan]

> Opensource few Focus tests

Prasanta Sadhukhan has updated the pull request incrementally with two additional commits since the last revision:

 - volatile
 - EDT

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21051/files
  - new: https://git.openjdk.org/jdk/pull/21051/files/4b6795d8..2dcd760b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21051&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21051&range=04-05

  Stats: 7 lines in 1 file changed: 4 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/21051.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21051/head:pull/21051

PR: https://git.openjdk.org/jdk/pull/21051