Revert of Switch SkBlurImageFilter over to new onFilterImage interface (patchset...

Revert of Switch SkBlurImageFilter over to new onFilterImage interface (patchset #15 id:270001 of https://codereview.chromium.org/1785643003/ )

Reason for revert:
serialize-8888 broken for some reason

Original issue's description:
> Switch SkBlurImageFilter over to new onFilterImage interface
>
> This CL relies on:
> https://codereview.chromium.org/1787883002/ (Add SkSpecialImage::extractSubset & NewFromPixmap)
> https://codereview.chromium.org/1808743003/ (Allow SkGpuDevice::drawSprite to handle subset SkBitmaps)
> https://codereview.chromium.org/1813813002/ (Add SkSpecialImage::makeTextureImage entry point)
>
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1785643003
>
> Committed: https://skia.googlesource.com/skia/+/3c935bc87020bfd19a08922f7394db3a801d168b

TBR=senorblanco@google.com,senorblanco@chromium.org,bsalomon@google.com,reed@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1831603002