tree 4acc7fbcb8a1e8dfd86129c3db19542e12e75418
parent 3105ea30d47d35848951cda0cc4b18750e5166ea
author Jeff Sharkey <jsharkey@android.com> 1445300525 -0700
committer Jeff Sharkey <jsharkey@android.com> 1445300884 -0700

Hide empty data usage cycles.

When building list of historical data usage cycles, omit cycles
that don't contain any data usage.  A bad NITZ or NTP fix may have
caused us to record some usage in 1970 or 2038, which would have
shown all the cycles in between.  Now we hide empty cycles to keep
things clean.

Bug: 18282691
Change-Id: Ib04c95d1411400ba9967d311b59402a26d39cfe3