Revert of Revert of another GM to ignore for blur rebaseline (https://codereview...

Revert of Revert of another GM to ignore for blur rebaseline (https://codereview.chromium.org/319943004/)

Reason for revert:
Hopefully working now

Original issue's description:
> Revert of another GM to ignore for blur rebaseline (https://codereview.chromium.org/319203002/)
>
> Reason for revert:
> Follow-on to fe689c46a76, which needs to be reverted due to bot failures.
>
> Original issue's description:
> > another GM to ignore for blur rebaseline
> >
> > BUG=skia:
> > TBR=jvanverth
> > NOTRY=True
> > NOTREECHECKS=True
> >
> > Committed: https://skia.googlesource.com/skia/+/f131055929afb9c9671aee3e575c380d48c5ee4d
>
> TBR=humper@google.com
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/f255de0fe160e33b340301859be1d9374c5607fe

R=jvanverth@google.com
TBR=jvanverth@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: humper@google.com

Review URL: https://codereview.chromium.org/324453004