commit a9bd731cd82b371e33389b55249b376002912f07
author Samuel Tan <samueltan@google.com> Wed Jun 29 15:21:10 2016 -0700
committer Samuel Tan <samueltan@google.com> Wed Jun 29 19:31:33 2016 -0700
tree 02085f97185640842546cc8cc9345c8ff3a805c1
parent b661ea1c7fb7d5730adb969f7b923ad67af24308

ScanDetail: do not inherit ScanResult.seen if it is unset

Set |ScanDetail.mSeen| to the current system time, if the |seen| field
of the ScanResult passed to the ScanDetail constructor is unset. This
ensures that |ScanDetail.mSeen| will always contain a valid timestamp,
and consequently, that ScanDetail.getSeen() always returns a valid
timestamp.

BUG: 29877741
TEST: Manual inspection of debug messages in ScanDetailCache, indicating
      the return values of ScanDetail.getSeen().

Change-Id: I46651d5b7b16f1ac0c46830fc6e0f0e187de830d