Merge "Wrapping folderLisners with weak reference, and storing it as an array" into ub-launcher3-calgary
am: 192ae6ca71

* commit '192ae6ca71b0a1401ad44020b631c634a348597e':
  Wrapping folderLisners with weak reference, and storing it as an array

Change-Id: Icc6f57d05b53b452073038f612a8277f8b395be4