tree 80eb54359cb3c65ac4ea76016e5e9afdbdb94ee3
parent 931845fcb3823ce175fcfc7c6ce2d9751102c331
author Winson <winsonc@google.com> 1456424313 -0800
committer Winson <winsonc@google.com> 1456438625 -0800

Track double taps to launch the previous task.

Change-Id: Icd792ed4f508f8a8540a5cd2d12c3bdfd5827410