Remove SkClipStack's manual rounding of BW clip rects

Remove SkClipStack's manual rounding of BW clip rects

The full fix for this bug is nudging the image in device space. That is going to be a large change. This CL should address the immediate problem.

This CL will alter the following GMs:
clipdrawdraw
convex_poly_clip
complexclip_bw_*
filltypespersp
complexclip3_simple



BUG=423834
Committed: https://skia.googlesource.com/skia/+/e523d4f90c3368c555282a98b41ca5ee2045103e

[robertphillips, 2015-03-24 16:03:11]

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

[bsalomon, 2015-03-24 16:04:31]

On 2015/03/24 16:03:11, robertphillips wrote:
> mailto:robertphillips@google.com changed reviewers:
> + mailto:bsalomon@google.com

lgtm

[robertphillips, 2015-03-24 20:52:59]

robertphillips@google.com changed reviewers:
+ joshualitt@chromium.org

[robertphillips, 2015-03-25 15:17:00]

Patchset #3 (id:40001) has been deleted

[robertphillips, 2015-03-25 15:22:35]

Patchset #3 (id:60001) has been deleted

[robertphillips, 2015-03-25 15:25:35]

The CQ bit was checked by robertphillips@google.com

[robertphillips, 2015-03-25 15:25:35]

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/1033453003/#ps80001
(title: "Revert unneeded changes")

[commit-bot: I haz the power, 2015-03-25 15:25:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1033453003/80001

[robertphillips, 2015-03-25 15:28:09]

The CQ bit was unchecked by robertphillips@google.com

[robertphillips, 2015-03-25 16:11:05]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2015-03-25 16:11:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1033453003/80001

[commit-bot: I haz the power, 2015-03-25 16:11:33]

Committed patchset #3 (id:80001) as
https://skia.googlesource.com/skia/+/e523d4f90c3368c555282a98b41ca5ee2045103e

[robertphillips, 2015-03-30 15:09:39]

A revert of this CL (patchset #3 id:80001) has been created in
https://codereview.chromium.org/1045853002/ by robertphillips@google.com.

The reason for reverting is: Reverting due to performance regression:
https://code.google.com/p/skia/issues/detail?id=3597.