<Swing Dev> RFR: 8075915: The eight controls without black backgrounds with WinLAF & GTK LAF & Nimbus LAF [v6]

[Alexander Zvegintsev]

> This manual test was written for Metal L&F, so now it is set explicitly.
> Test is also refactored to use JFrame instead of Applet.
> 
> The test is not in `ProblemList.txt`.
> It still fails on JDK 1.5 (after removing all syntactic sugar).

Alexander Zvegintsev has updated the pull request incrementally with one additional commit since the last revision:

  text block replaced with string literal.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3474/files
  - new: https://git.openjdk.java.net/jdk/pull/3474/files/e46bd17a..ad54c65f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3474&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3474&range=04-05

  Stats: 16 lines in 1 file changed: 2 ins; 5 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3474.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3474/head:pull/3474

PR: https://git.openjdk.java.net/jdk/pull/3474