[9] Review request for 8033000 No Horizontal Mouse Wheel Support In BasicScrollPaneUI

[Alexander Scherbatiy]

Hello,

Could you review the fix:
  bug: https://bugs.openjdk.java.net/browse/JDK-8033000
  webrev: http://cr.openjdk.java.net/~alexsch/8033000/webrev.00

  Shift modifier is added to for the horizontal scrolling detection.

Thanks,
Alexandr.