Make Porter Duff LCD XP its own XferProcessor

Make Porter Duff LCD XP its own XferProcessor

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/0d5fd110e0b7ce9b892833d874145a79ca67da8d

[egdaniel, 2015-05-11 20:35:39]

egdaniel@google.com changed reviewers:
+ bsalomon@google.com

[bsalomon, 2015-05-11 20:58:30]

lgtm

https://codereview.chromium.org/1134093003/diff/20001/src/gpu/effects/GrPorte...
File src/gpu/effects/GrPorterDuffXferProcessor.cpp (right):

https://codereview.chromium.org/1134093003/diff/20001/src/gpu/effects/GrPorte...
src/gpu/effects/GrPorterDuffXferProcessor.cpp:680: if
(!covPOI.isFourChannelOutput()) {
reverse this? if (isfour) { } else { }

[egdaniel, 2015-05-12 12:59:45]

The CQ bit was checked by egdaniel@google.com

[egdaniel, 2015-05-12 12:59:46]

The patchset sent to the CQ was uploaded after l-g-t-m from bsalomon@google.com
Link to the patchset: https://codereview.chromium.org/1134093003/#ps40001
(title: "Review update")

[commit-bot: I haz the power, 2015-05-12 13:00:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134093003/40001

[commit-bot: I haz the power, 2015-05-12 13:01:11]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-05-12 13:01:12]

Try jobs failed on following builders:
  Build-Ubuntu-Clang-x86_64-Debug-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-Clang-x...)

[egdaniel, 2015-05-12 13:05:18]

The CQ bit was checked by egdaniel@google.com

[egdaniel, 2015-05-12 13:05:18]

The patchset sent to the CQ was uploaded after l-g-t-m from bsalomon@google.com
Link to the patchset: https://codereview.chromium.org/1134093003/#ps60001
(title: "build fix")

[commit-bot: I haz the power, 2015-05-12 13:05:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134093003/60001

[commit-bot: I haz the power, 2015-05-12 13:11:39]

Committed patchset #4 (id:60001) as
https://skia.googlesource.com/skia/+/0d5fd110e0b7ce9b892833d874145a79ca67da8d