fiddle: fold limitwriter into buildskia.
fiddle: fold limitwriter into buildskia.

BUG=skia:
NOTRY=true

Review URL: https://codereview.chromium.org/1866383003

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