[gold] Disable commenting for chrome instance
[gold] Disable commenting for chrome instance

Bug: skia:10787
Change-Id: Ida0f5ddf06755cd30a333ab369467c7df0baaad8
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/405401
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@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