<Swing Dev> RFR: 8258643: javax/swing/JComponent/7154030/bug7154030.java failed with "Exception: Failed to hide opaque button"

[Alexander Zuev]

8258643: javax/swing/JComponent/7154030/bug7154030.java failed with "Exception: Failed to hide opaque button"

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Commit messages:
 - 8258643: javax/swing/JComponent/7154030/bug7154030.java failed with "Exception: Failed to hide opaque button"
 - Merge pull request #7 from openjdk/master
 - Merge pull request #6 from openjdk/master
 - Merge pull request #5 from openjdk/master
 - Merge pull request #4 from openjdk/master
 - Merge pull request #3 from openjdk/master
 - Merge pull request #2 from openjdk/master
 - Merge pull request #1 from openjdk/master

Changes: https://git.openjdk.java.net/jdk/pull/1929/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1929&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258643
  Stats: 6 lines in 1 file changed: 1 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1929.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1929/head:pull/1929

PR: https://git.openjdk.java.net/jdk/pull/1929