Autoroll test: track fake issue numbers within each mockRietveld
Autoroll test: track fake issue numbers within each mockRietveld

BUG=skia:
TBR=rmistry

Review URL: https://codereview.chromium.org/1409123009

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot