tree 066b377c22580ee61edc392a443c7c711374d5c1
parent 41852249424b5ac7662415d19530e6a7f2635c0f
author Wyatt Allen <wyatta@google.com> 1492035189 -0700
committer Wyatt Allen <wyatta@google.com> 1492108815 -0700

Fix added and removed images

Runtime errors occurred when image diffs showed added or removed images
(as opposed to modified images). With this change, test cases are added
to encode behavior against future regressions, and diff builder logic is
updated to avoid the error.

Bug: Issue 5995
Change-Id: If04220256074dac245b971e6229f0dae4a175689