[7u] Review request for CR 8006070 TEST_BUG: Up and down the Y coordinate of the mouse position, the selected item doesn't change for the single list.

[Konstantin Shefov]

Hello,

Please review a fix for the issue:
8006070 TEST_BUG: Up and down the Y coordinate of the mouse position, 
the selected item doesn't change for the single list.

Direct backport and move from closed to openjdk 8

The webrev is: http://cr.openjdk.java.net/~kshefov/8006070_7u/webrev.00/

Diff: http://cr.openjdk.java.net/~kshefov/8006070/open.closed.diff/

Thanks,
Konstantin