am 750a64ac: am 6888f559: Merge change If0c93a57 into eclair-mr2

Merge commit '750a64aca07faf032f1e3ea40cee840d34be0d2c'

* commit '750a64aca07faf032f1e3ea40cee840d34be0d2c':
  add DragTracker class