tree af607379297cfad733976a5f4a318bfa96df96ce
parent 2b97c063bae8446f2b539e663590399ff0251de8
author Peng Xu <pengxu@google.com> 1460096114 -0700
committer Peng Xu <pengxu@google.com> 1460751350 -0700

sensorservice: switch to use sp<> in sensor list

* Switch to use smart pointer in SensorList to avoid object
  life cycle issue.
* Refactor HardwareSensor and various virtual sensor class.
* Change active virtual sensor map into a set of handles.

Change-Id: I674d5eb5c0038179f9ef1b6f0d576b8b605649ec