Stop supporting HW dither

Stop supporting HW dither

Committed: https://skia.googlesource.com/skia/+/aca31fea8ca620bfdb2887641b7ba56e401a72d7

[bsalomon, 2015-09-22 17:37:52]

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

[bsalomon, 2015-09-22 17:37:59]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2015-09-22 17:38:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1359833004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1359833004/20001

[commit-bot: I haz the power, 2015-09-22 17:38:17]

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 2015-09-22 23:38 UTC

[robertphillips, 2015-09-22 18:34:57]

lgtm. Just to clarify: after this patch we will never use the HW dithering but,
if dithering is requested on the paint and there is some color stages, we will
always use our shader-based dithering.

[bsalomon, 2015-09-22 18:36:28]

The CQ bit was unchecked by bsalomon@google.com

[bsalomon, 2015-09-22 18:37:33]

On 2015/09/22 18:34:57, robertphillips wrote:
> lgtm. Just to clarify: after this patch we will never use the HW dithering
but,
> if dithering is requested on the paint and there is some color stages, we will
> always use our shader-based dithering.

changed the desc

[bsalomon, 2015-09-22 18:37:37]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2015-09-22 18:37:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1359833004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1359833004/20001

[commit-bot: I haz the power, 2015-09-22 18:38:50]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/aca31fea8ca620bfdb2887641b7ba56e401a72d7