tree 49efcf60fd4e4b846e9323dc2f70a993eb479260
parent e3446b32457f2e9b558ee7dd4f63a4a2f7db8937
author Stephen Li <stephenli@google.com> 1491418988 -0700
committer Stephen Li <stephenli@google.com> 1491420704 -0700

Use change number instead of triplet.

The change number is unique. The triplet is not guaranteed to be
unique. This can cause us to throw 404s when we have non-unique
triplets.

Change-Id: I9f83b456eb47452dce88b27c62c8a38a89c7fa26