[fiddle] Switch over to the skia-public version of fiddle.
[fiddle] Switch over to the skia-public version of fiddle.

Bug: skia:
Change-Id: I332d8c4ed2b7619b2602ab9e2ccb47d1d07be41e
Reviewed-on: https://skia-review.googlesource.com/136020
Reviewed-by: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>

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