Switch textures created by DeviceImageFilterProxy to approx-match.

Switch textures created by DeviceImageFilterProxy to 
approx-match.

This revealed some further 0..1 texture coordinate 
depedencies,specifically in SkDisplacementMapEffect and 
SkXfermodeImageFilter, fixed through use of 
GrTextureDomain.

Note: causes minor pixel diffs in pictureimagefilter, 
testimagefilters GMs.

Also causes minor pixel diffs in some Blink layout tests, 
suppressed here: https://codereview.chromium.org/1064943002

BUG=skia:3532
Committed: https://skia.googlesource.com/skia/+/d762ca2586707cb808342b11832073e8b3df33ad

[Stephen White, 2015-04-06 20:00:19]

senorblanco@chromium.org changed reviewers:
+ robertphillips@chromium.org

[Stephen White, 2015-04-06 20:00:30]

robertphillips@: PTAL. Thanks!

[robertphillips, 2015-04-07 13:25:45]

robertphillips@google.com changed reviewers:
+ robertphillips@google.com

[robertphillips, 2015-04-07 13:25:46]

lgtm. So there is no way to have repeating image filters?

https://codereview.chromium.org/1065683002/diff/1/src/effects/SkDisplacementM...
File src/effects/SkDisplacementMapEffect.cpp (right):

https://codereview.chromium.org/1065683002/diff/1/src/effects/SkDisplacementM...
src/effects/SkDisplacementMapEffect.cpp:364: const char* name() const override {
return "DisplacementMap"; }
extra trailing ";" ?

[Stephen White, 2015-04-07 15:41:47]

On 2015/04/07 13:25:46, robertphillips wrote:
> lgtm. So there is no way to have repeating image filters?

There is SkTileImageFilter, but it does an extraSubset().

[Stephen White, 2015-04-07 15:43:28]

On 2015/04/07 15:41:47, Stephen White wrote:
> On 2015/04/07 13:25:46, robertphillips wrote:
> > lgtm. So there is no way to have repeating image filters?
> 
> There is SkTileImageFilter, but it does an extraSubset().

er, extractSubset().

[Stephen White, 2015-04-07 15:43:37]

https://codereview.chromium.org/1065683002/diff/1/src/effects/SkDisplacementM...
File src/effects/SkDisplacementMapEffect.cpp (right):

https://codereview.chromium.org/1065683002/diff/1/src/effects/SkDisplacementM...
src/effects/SkDisplacementMapEffect.cpp:364: const char* name() const override {
return "DisplacementMap"; }
On 2015/04/07 13:25:46, robertphillips wrote:
> extra trailing ";" ?

Done.

[Stephen White, 2015-04-07 17:51:08]

The CQ bit was checked by senorblanco@chromium.org

[Stephen White, 2015-04-07 17:51:08]

The patchset sent to the CQ was uploaded after l-g-t-m from
robertphillips@google.com
Link to the patchset: https://codereview.chromium.org/1065683002/#ps20001
(title: "Fix trailing semicolon")

[commit-bot: I haz the power, 2015-04-07 17:51:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1065683002/20001

[commit-bot: I haz the power, 2015-04-07 19:16:59]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/d762ca2586707cb808342b11832073e8b3df33ad