Reland of Simplify SkGpuBlurUtils::GaussianBlur method

Reland of Simplify SkGpuBlurUtils::GaussianBlur method (patchset #1 id:1 of https://codereview.chromium.org/1956023002/ )

Reason for revert:
May not be as bad as was thought

Original issue's description:
> Revert of Simplify SkGpuBlurUtils::GaussianBlur method (patchset #2 id:20001 of https://codereview.chromium.org/1958603002/ )
> 
> Reason for revert:
> Looks like it's causing some issues with the bleed_image GM.
> 
> Original issue's description:
> > Simplify SkGpuBlurUtils::GaussianBlur method
> > 
> > No one was using the canClobberSrc capability and moving the direct filtering case forward makes the rest of the logic simpler.
> > 
> > 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=1958603002
> > 
> > Committed: https://skia.googlesource.com/skia/+/56a85e69a8d034e0fdee00e8207cda0a9da06fee
> 
> 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/+/67a58dcd4a1e79e5832161ae953526d27893aa61

TBR=bsalomon@google.com,jvanverth@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.

Committed: https://skia.googlesource.com/skia/+/a8966a8a34f32bf3bb1dd2f9b6a77cdb1ebe1809

[robertphillips, 2016-05-09 13:24:18]

Created Reland of Simplify SkGpuBlurUtils::GaussianBlur method

[commit-bot: I haz the power, 2016-05-09 13:24:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1961953002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1961953002/1

[bsalomon, 2016-05-09 13:27:14]

lgtm

[commit-bot: I haz the power, 2016-05-09 13:45:39]

Description was changed from

==========
Reland of Simplify SkGpuBlurUtils::GaussianBlur method (patchset #1 id:1 of
https://codereview.chromium.org/1956023002/ )

Reason for revert:
May not be as bad as was thought

Original issue's description:
> Revert of Simplify SkGpuBlurUtils::GaussianBlur method (patchset #2 id:20001
of https://codereview.chromium.org/1958603002/ )
> 
> Reason for revert:
> Looks like it's causing some issues with the bleed_image GM.
> 
> Original issue's description:
> > Simplify SkGpuBlurUtils::GaussianBlur method
> > 
> > No one was using the canClobberSrc capability and moving the direct
filtering case forward makes the rest of the logic simpler.
> > 
> > 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/+/56a85e69a8d034e0fdee00e8207cda0a9da06fee
> 
> 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/+/67a58dcd4a1e79e5832161ae953526d27893aa61

TBR=bsalomon@google.com,jvanverth@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
==========

to

==========
Reland of Simplify SkGpuBlurUtils::GaussianBlur method (patchset #1 id:1 of
https://codereview.chromium.org/1956023002/ )

Reason for revert:
May not be as bad as was thought

Original issue's description:
> Revert of Simplify SkGpuBlurUtils::GaussianBlur method (patchset #2 id:20001
of https://codereview.chromium.org/1958603002/ )
> 
> Reason for revert:
> Looks like it's causing some issues with the bleed_image GM.
> 
> Original issue's description:
> > Simplify SkGpuBlurUtils::GaussianBlur method
> > 
> > No one was using the canClobberSrc capability and moving the direct
filtering case forward makes the rest of the logic simpler.
> > 
> > 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/+/56a85e69a8d034e0fdee00e8207cda0a9da06fee
> 
> 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/+/67a58dcd4a1e79e5832161ae953526d27893aa61

TBR=bsalomon@google.com,jvanverth@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.

Committed:
https://skia.googlesource.com/skia/+/a8966a8a34f32bf3bb1dd2f9b6a77cdb1ebe1809
==========

[commit-bot: I haz the power, 2016-05-09 13:45:40]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/a8966a8a34f32bf3bb1dd2f9b6a77cdb1ebe1809