<Swing Dev> RFR: 8197825: [Test] Intermittent timeout with javax/swing JColorChooser Test [v4]

[Prasanta Sadhukhan]

> This test was failing in our nightly mach5 testing. Appropriate stability code in form of waitForIdle and delay is added.
> mach5 job running for several iterations on all platforms is ok. Link in JBS.

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  Declare m_breakMessageLoop volatile

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2220/files
  - new: https://git.openjdk.java.net/jdk/pull/2220/files/6fdcc0d7..d7dc2a52

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2220&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2220&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2220.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2220/head:pull/2220

PR: https://git.openjdk.java.net/jdk/pull/2220