gold: Catch clicks on the icons in the sort element.
gold: Catch clicks on the icons in the sort element.

BUG=skia:3913
TBR=stephana

Review URL: https://codereview.chromium.org/1210403010

google/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,Tiger66639/skia-buildbot,Tiger66639/skia-buildbot,google/skia-buildbot,google/skia-buildbot