Removed TODO(crbug.com/677354).

Removed TODO(crbug.com/677354).

|WKNavigation| argument is null_unspecified, so it is expected that
navigation object can be null.

BUG=677354
Review-Url: https://codereview.chromium.org/2711843002
Cr-Commit-Position: refs/heads/master@{#452353}
Committed: https://chromium.googlesource.com/chromium/src/+/afa9f1d9f15899f52ec07b4e23c2e6cee0d17240

[Eugene But (OOO till 7-30), 2017-02-23 00:42:38]

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

[Eugene But (OOO till 7-30), 2017-02-23 00:42:47]

eugenebut@chromium.org changed reviewers:
+ kkhorimoto@chromium.org

[commit-bot: I haz the power, 2017-02-23 00:43:42]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[kkhorimoto, 2017-02-23 01:20:08]

lgtm

[commit-bot: I haz the power, 2017-02-23 01:30:48]

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

[commit-bot: I haz the power, 2017-02-23 01:30:49]

Dry run: This issue passed the CQ dry run.

[Eugene But (OOO till 7-30), 2017-02-23 02:29:49]

The CQ bit was checked by eugenebut@chromium.org

[commit-bot: I haz the power, 2017-02-23 02:30:27]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-23 02:36:03]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1487816989387560,
"parent_rev": "b63e31dccd4b0fd0731209fcca2afcc84586598a", "commit_rev":
"afa9f1d9f15899f52ec07b4e23c2e6cee0d17240"}

[commit-bot: I haz the power, 2017-02-23 02:36:42]

Description was changed from

==========
Removed TODO(crbug.com/677354).

|WKNavigation| argument is null_unspecified, so it is expected that
navigation object can be null.

BUG=677354
==========

to

==========
Removed TODO(crbug.com/677354).

|WKNavigation| argument is null_unspecified, so it is expected that
navigation object can be null.

BUG=677354

Review-Url: https://codereview.chromium.org/2711843002
Cr-Commit-Position: refs/heads/master@{#452353}
Committed:
https://chromium.googlesource.com/chromium/src/+/afa9f1d9f15899f52ec07b4e23c2...
==========

[commit-bot: I haz the power, 2017-02-23 02:36:43]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/afa9f1d9f15899f52ec07b4e23c2...