Revert of Make SkGpuBlurUtils::GaussianBlur more drawContext centric

Revert of Make SkGpuBlurUtils::GaussianBlur more drawContext centric (patchset #2 id:20001 of https://codereview.chromium.org/1962903003/ )

Reason for revert:
This looks to be causing errors in Gold.  I don't know if I can make a permanent link to something in Gold, but take a look at imagefilterscropexpand for an example.

Original issue's description:
> Make SkGpuBlurUtils::GaussianBlur more drawContext centric
> 
> This is split out of https://codereview.chromium.org/1959493002/ (Retract GrRenderTarget from SkGpuBlurUtils)
> 
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1962903003
> 
> Committed: https://skia.googlesource.com/skia/+/e7ef01dcfda0f8ae407ba92cc03cf3f7841ec470

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

Committed: https://skia.googlesource.com/skia/+/6a51491b2491a646f2e378ccbae301136b6ec215

[scroggo, 2016-05-11 17:20:45]

Created Revert of Make SkGpuBlurUtils::GaussianBlur more drawContext centric

[commit-bot: I haz the power, 2016-05-11 17:20:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1973563002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1973563002/1

[commit-bot: I haz the power, 2016-05-11 17:21:02]

Description was changed from

==========
Revert of Make SkGpuBlurUtils::GaussianBlur more drawContext centric (patchset
#2 id:20001 of https://codereview.chromium.org/1962903003/ )

Reason for revert:
This looks to be causing errors in Gold.  I don't know if I can make a permanent
link to something in Gold, but take a look at imagefilterscropexpand for an
example.

Original issue's description:
> Make SkGpuBlurUtils::GaussianBlur more drawContext centric
> 
> This is split out of https://codereview.chromium.org/1959493002/ (Retract
GrRenderTarget from SkGpuBlurUtils)
> 
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/e7ef01dcfda0f8ae407ba92cc03cf3f7841ec470

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

to

==========
Revert of Make SkGpuBlurUtils::GaussianBlur more drawContext centric (patchset
#2 id:20001 of https://codereview.chromium.org/1962903003/ )

Reason for revert:
This looks to be causing errors in Gold.  I don't know if I can make a permanent
link to something in Gold, but take a look at imagefilterscropexpand for an
example.

Original issue's description:
> Make SkGpuBlurUtils::GaussianBlur more drawContext centric
> 
> This is split out of https://codereview.chromium.org/1959493002/ (Retract
GrRenderTarget from SkGpuBlurUtils)
> 
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/e7ef01dcfda0f8ae407ba92cc03cf3f7841ec470

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

Committed:
https://skia.googlesource.com/skia/+/6a51491b2491a646f2e378ccbae301136b6ec215
==========

[commit-bot: I haz the power, 2016-05-11 17:21:03]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/6a51491b2491a646f2e378ccbae301136b6ec215