Revert of Bilinear optimization for 1D convolution.

Revert of Bilinear optimization for 1D convolution. (patchset #5 id:200001 of https://codereview.chromium.org/1216623003/)

Reason for revert:
Ok, I am now seeing a couple issues. going to revert and investigate further.

Original issue's description:
> Bilinear optimization for 1D convolution.
> 
> Splits GrGLConvolutionEffect into GrGLBilerpConvolutionEffect and
> GrGLBoundedConvolutionEffect. When doing a non-bounded convolution we now
> always use the GrGLBilerpConvolutionEffect which uses bilinear filtering to
> perform half as many samples in the texture.
> 
> BUG=skia:3986
> 
> Committed: https://skia.googlesource.com/skia/+/91abe10af417148939548551e210c001022d3bda
> 
> Committed: https://skia.googlesource.com/skia/+/0f38612b0facf585854aba4556433b858cbf7da8

TBR=bsalomon@google.com,senorblanco@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:3986
Committed: https://skia.googlesource.com/skia/+/7a787b47437043aacc2d476beab2f531bc02fe9d

[ericrk, 2015-07-21 20:48:54]

Created Revert of Bilinear optimization for 1D convolution.

[commit-bot: I haz the power, 2015-07-21 20:49:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1247063005/1

[commit-bot: I haz the power, 2015-07-21 20:49:07]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2015-07-22 02:49 UTC

[bsalomon, 2015-07-21 21:05:42]

On 2015/07/21 20:49:07, commit-bot: I haz the power wrote:
> Note for Reviewers:
> The CQ is waiting for an approval.
> If you believe that the CL is not ready yet, or if you would like to L-G-T-M
> with comments then please uncheck the CQ checkbox.
> 
> Waiting for LGTM from valid reviewer(s) till 2015-07-22 02:49 UTC

lgtm

[commit-bot: I haz the power, 2015-07-21 21:06:18]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/7a787b47437043aacc2d476beab2f531bc02fe9d