run the webtry build script instead of using go build
run the webtry build script instead of using go build

BUG=skia:
R=jcgregorio@google.com

Author: humper@google.com

Review URL: https://codereview.chromium.org/601203002

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