ASSERT -> DCHECK conversions in core/editing.

ASSERT -> DCHECK conversions in core/editing.

ENABLE(ASSERT) -> DCHECK_IS_ON() in core/editing.
ASSERT_NOT_REACHED() -> NOTREACHED() in core/editing.

BUG=596760
Committed: https://crrev.com/673555a5d9c7a1bc26dc67813e1110cdc2e07268
Cr-Commit-Position: refs/heads/master@{#400923}

[kotenkov, 2016-06-21 08:31:56]

kotenkov@yandex-team.ru changed reviewers:
+ yosin@chromium.org

[kotenkov, 2016-06-21 08:31:57]

Another CL with ASSERT -> DCHECK conversion.
One of these ENABLE(ASSERT) was causing a compilation error in one of yandex
build configuration, so I decided I would get rid of them completely.
PTAL

[yosin_UTC9, 2016-06-21 08:42:52]

lgtm

Thanks!

[yosin_UTC9, 2016-06-21 08:42:58]

The CQ bit was checked by yosin@chromium.org

[commit-bot: I haz the power, 2016-06-21 08:43:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2082503003/1

[commit-bot: I haz the power, 2016-06-21 08:48:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-21 08:49:55]

Description was changed from

==========
ASSERT -> DCHECK conversions in core/editing.

ENABLE(ASSERT) -> DCHECK_IS_ON() in core/editing.
ASSERT_NOT_REACHED() -> NOTREACHED() in core/editing.

BUG=596760
==========

to

==========
ASSERT -> DCHECK conversions in core/editing.

ENABLE(ASSERT) -> DCHECK_IS_ON() in core/editing.
ASSERT_NOT_REACHED() -> NOTREACHED() in core/editing.

BUG=596760

Committed: https://crrev.com/673555a5d9c7a1bc26dc67813e1110cdc2e07268
Cr-Commit-Position: refs/heads/master@{#400923}
==========

[commit-bot: I haz the power, 2016-06-21 08:49:57]

Patchset 1 (id:??) landed as
https://crrev.com/673555a5d9c7a1bc26dc67813e1110cdc2e07268
Cr-Commit-Position: refs/heads/master@{#400923}