tree d40131743548970d2462e4206ceb01eb897bed6e
parent abb45a5542fedd2a7c587aa91402b21f606bc259
author Tianjie Xu <xunchang@google.com> 1508882058 -0700
committer Tianjie Xu <xunchang@google.com> 1509053292 +0000

Collect android metrics for bytes downloaded

Report bytes downloaded for update attempts and successful updates.

Prefs used to help metrics report:
kPrefsCurrentBytesDownloaded
kPrefsTotalBytesDownloaded

Bug: 30989466
Test: unittest pass
Change-Id: I7d213204ee2757551ad914c122a274965dfbff06