am 89d538dc: ADT/Layoutlib: don\'t draw 0-sized rectangle, AWT doesn\'t like that.

Merge commit '89d538dcca9a4cb95682c56b0c4b85e8a77442be' into eclair-plus-aosp

* commit '89d538dcca9a4cb95682c56b0c4b85e8a77442be':
  ADT/Layoutlib: don't draw 0-sized rectangle, AWT doesn't like that.