<Swing Dev> RFR: 8266249: javax/swing/JPopupMenu/7156657/bug7156657.java fails on macOS [v2]

[Alexander Zuev]

> Fixed popup position taking into account its offset
> Added a lot of screenshots taking to better understand failures should they happen down the line

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

  Added delay so frame repainting finished

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3844/files
  - new: https://git.openjdk.java.net/jdk/pull/3844/files/2c8fd384..f3589c68

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3844&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3844&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3844.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3844/head:pull/3844

PR: https://git.openjdk.java.net/jdk/pull/3844