Adjust tolerance to fix bezier glitches issue

Adjust tolerance to fix bezier glitches issue

In a previous CL: https://codereview.chromium.org/1126793003, the value
of gDegenerateToLineTol was changed from 1.0 to 0.25 which caused the
bezier glitches.

This CL changes the value to SK_ScalarRoot2Over2, with this change the
bezier curve looks fine, and the result of the layout tests pointed out
in this bug: https://bugs.chromium.org/p/chromium/issues/detail?id=472847
is also reasonable.

BUG=605439
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1926063002

Committed: https://skia.googlesource.com/skia/+/45a6f49ef9ff276e08025d0d2ba6a821a96d3f34

[xidachen, 2016-04-28 14:24:56]

Description was changed from

==========
Adjust tolerance to fix bezier glitches issue

In a previous CL: https://codereview.chromium.org/1126793003, the value
of gDegenerateToLineTol was changed from 1.0 to 0.25 which caused the
bezier glitches.

This CL changes the value to SK_ScalarRoot2Over2, with this change the
bezier curve looks fine, and the result of the layout tests pointed out
in this bug: https://bugs.chromium.org/p/chromium/issues/detail?id=472847
is also reasonable.

BUG=605439
==========

to

==========
Adjust tolerance to fix bezier glitches issue

In a previous CL: https://codereview.chromium.org/1126793003, the value
of gDegenerateToLineTol was changed from 1.0 to 0.25 which caused the
bezier glitches.

This CL changes the value to SK_ScalarRoot2Over2, with this change the
bezier curve looks fine, and the result of the layout tests pointed out
in this bug: https://bugs.chromium.org/p/chromium/issues/detail?id=472847
is also reasonable.

BUG=605439
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[xidachen, 2016-04-28 14:40:05]

xidachen@chromium.org changed reviewers:
+ jvanverth@google.com, robertphillips@google.com

[xidachen, 2016-04-28 14:40:05]

PTAL

[jvanverth1, 2016-04-28 20:02:40]

lgtm

[xidachen, 2016-04-29 01:12:41]

The CQ bit was checked by xidachen@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-04-29 01:12:45]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1926063002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1926063002/1

[commit-bot: I haz the power, 2016-04-29 01:23:35]

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

[commit-bot: I haz the power, 2016-04-29 01:23:36]

Dry run: This issue passed the CQ dry run.

[xidachen, 2016-04-29 01:24:31]

The CQ bit was checked by xidachen@chromium.org

[commit-bot: I haz the power, 2016-04-29 01:24:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1926063002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1926063002/1

[commit-bot: I haz the power, 2016-04-29 01:25:28]

Description was changed from

==========
Adjust tolerance to fix bezier glitches issue

In a previous CL: https://codereview.chromium.org/1126793003, the value
of gDegenerateToLineTol was changed from 1.0 to 0.25 which caused the
bezier glitches.

This CL changes the value to SK_ScalarRoot2Over2, with this change the
bezier curve looks fine, and the result of the layout tests pointed out
in this bug: https://bugs.chromium.org/p/chromium/issues/detail?id=472847
is also reasonable.

BUG=605439
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Adjust tolerance to fix bezier glitches issue

In a previous CL: https://codereview.chromium.org/1126793003, the value
of gDegenerateToLineTol was changed from 1.0 to 0.25 which caused the
bezier glitches.

This CL changes the value to SK_ScalarRoot2Over2, with this change the
bezier curve looks fine, and the result of the layout tests pointed out
in this bug: https://bugs.chromium.org/p/chromium/issues/detail?id=472847
is also reasonable.

BUG=605439
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/45a6f49ef9ff276e08025d0d2ba6a821a96d3f34
==========

[commit-bot: I haz the power, 2016-04-29 01:25:32]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/45a6f49ef9ff276e08025d0d2ba6a821a96d3f34

[jvanverth1, 2016-04-29 14:38:03]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1933733002/ by jvanverth@google.com.

The reason for reverting is: This is causing undesirable image failures in a
large number of Skia GMs..