<Swing Dev> RFR: 8261689: javax/swing/JComponent/7154030/bug7154030.java still fails with "Exception: Failed to hide opaque button" [v3]

[Alexander Zuev]

> 8261689: javax/swing/JComponent/7154030/bug7154030.java still fails with "Exception: Failed to hide opaque button"

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

  Moved checking block up to keep consistency of operations.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2790/files
  - new: https://git.openjdk.java.net/jdk/pull/2790/files/2c6594c6..0bfe02fd

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2790&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2790&range=01-02

  Stats: 14 lines in 1 file changed: 7 ins; 7 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2790.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2790/head:pull/2790

PR: https://git.openjdk.java.net/jdk/pull/2790