[8u] RFR: 8225505: ctrl-F1 does not show the tooltip of a menu item (JMenuItems)

[Alex Kashchenko]

Hi,

Please review the backport of JDK-8225505 to 8u:

Bug: https://bugs.openjdk.java.net/browse/JDK-8225505

Original review thread: 
http://mail.openjdk.java.net/pipermail/swing-dev/2019-August/009737.html

11u changeset: 
https://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/4de4abef5634

8u webrev: http://cr.openjdk.java.net/~akasko/jdk8u/8225505/webrev.00/

Patch does not apply cleanly because of the differences in import 
section (and a year in copyright header), all other code changes are 
left the same.

-- 
-Alex