Do not show display:none clipPath targets when referenced with <use>

Do not show display:none clipPath targets when referenced with <use>

This patch fixes a crash when a <use> element references a display:none
geometry element. In this scenario there is no layout object and no
path to use for clipping, so no clipping should occur. This matches the
existing behavior for non-used display:none elements
(LayoutSVGResourceClipper::createContentPicture).

A test has been added of both direct and indirect display:none clip path
children.

BUG=598806
Committed: https://crrev.com/ccdb62a9c8970104efc2e127744a7caf35fe8787
Cr-Commit-Position: refs/heads/master@{#384002}

[pdr., 2016-03-30 03:09:26]

pdr@chromium.org changed reviewers:
+ fs@opera.com

[pdr., 2016-03-30 03:09:45]

Simple one for a change.

[pdr., 2016-03-30 03:09:48]

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

[commit-bot: I haz the power, 2016-03-30 03:10:23]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1840343002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1840343002/1

[fs, 2016-03-30 07:50:36]

lgtm

[commit-bot: I haz the power, 2016-03-30 09:11:24]

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

[commit-bot: I haz the power, 2016-03-30 09:11:25]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on tryserver.chromium.win (JOB_TIMED_OUT,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[pdr., 2016-03-30 15:36:32]

The CQ bit was checked by pdr@chromium.org

[commit-bot: I haz the power, 2016-03-30 15:38:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1840343002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1840343002/1

[commit-bot: I haz the power, 2016-03-30 16:45:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-30 16:46:48]

Description was changed from

==========
Do not show display:none clipPath targets when referenced with <use>

This patch fixes a crash when a <use> element references a display:none
geometry element. In this scenario there is no layout object and no
path to use for clipping, so no clipping should occur. This matches the
existing behavior for non-used display:none elements
(LayoutSVGResourceClipper::createContentPicture).

A test has been added of both direct and indirect display:none clip path
children.

BUG=598806
==========

to

==========
Do not show display:none clipPath targets when referenced with <use>

This patch fixes a crash when a <use> element references a display:none
geometry element. In this scenario there is no layout object and no
path to use for clipping, so no clipping should occur. This matches the
existing behavior for non-used display:none elements
(LayoutSVGResourceClipper::createContentPicture).

A test has been added of both direct and indirect display:none clip path
children.

BUG=598806

Committed: https://crrev.com/ccdb62a9c8970104efc2e127744a7caf35fe8787
Cr-Commit-Position: refs/heads/master@{#384002}
==========

[commit-bot: I haz the power, 2016-03-30 16:46:49]

Patchset 1 (id:??) landed as
https://crrev.com/ccdb62a9c8970104efc2e127744a7caf35fe8787
Cr-Commit-Position: refs/heads/master@{#384002}