Don't try to find a slot in a v0 shadow tree.

Don't try to find a slot in a v0 shadow tree.

ElementShadow::assignedSlotFor asserts that it's only called for V1
ElementShadows and doesn't null check m_slotAssignment. Guard with an
if-check for V1 when assignedSlotFor from Node::assignedSlot like we
already do from Node::assignedSlotForBinding.

R=hayato@chromium.org,kochi@chromium.org
BUG=588209
Committed: https://crrev.com/d20f8d9a716b2f64a0f53f7be939d7ab68768ac7
Cr-Commit-Position: refs/heads/master@{#376699}

[rune, 2016-02-20 01:14:08]

The CQ bit was checked by rune@opera.com to run a CQ dry run

[rune, 2016-02-20 01:14:17]

ptal

[commit-bot: I haz the power, 2016-02-20 01:17:13]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1717053002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1717053002/1

[commit-bot: I haz the power, 2016-02-20 02:37:44]

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

[commit-bot: I haz the power, 2016-02-20 02:37:44]

Dry run: This issue passed the CQ dry run.

[kochi, 2016-02-22 05:26:59]

lgtm

[rune, 2016-02-22 06:05:19]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2016-02-22 06:05:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1717053002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1717053002/1

[commit-bot: I haz the power, 2016-02-22 07:29:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-22 07:31:14]

Description was changed from

==========
Don't try to find a slot in a v0 shadow tree.

ElementShadow::assignedSlotFor asserts that it's only called for V1
ElementShadows and doesn't null check m_slotAssignment. Guard with an
if-check for V1 when assignedSlotFor from Node::assignedSlot like we
already do from Node::assignedSlotForBinding.

R=hayato@chromium.org,kochi@chromium.org
BUG=588209
==========

to

==========
Don't try to find a slot in a v0 shadow tree.

ElementShadow::assignedSlotFor asserts that it's only called for V1
ElementShadows and doesn't null check m_slotAssignment. Guard with an
if-check for V1 when assignedSlotFor from Node::assignedSlot like we
already do from Node::assignedSlotForBinding.

R=hayato@chromium.org,kochi@chromium.org
BUG=588209

Committed: https://crrev.com/d20f8d9a716b2f64a0f53f7be939d7ab68768ac7
Cr-Commit-Position: refs/heads/master@{#376699}
==========

[commit-bot: I haz the power, 2016-02-22 07:31:18]

Patchset 1 (id:??) landed as
https://crrev.com/d20f8d9a716b2f64a0f53f7be939d7ab68768ac7
Cr-Commit-Position: refs/heads/master@{#376699}