Fix Skia AutoRoll alert text
Fix Skia AutoRoll alert text

BUG=skia:

Review URL: https://codereview.chromium.org/1691583004

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