Don't try to store POST data for a nil CWRSessionEntry

Don't try to store POST data for a nil CWRSessionEntry

Due to bug 570699, it's sometimes possible not to have any current
SessionEntry/NavgitionItem. In that case, don't attempt to store
POST data on the item.

BUG=574195, 570699
Committed: https://crrev.com/8deee5e976def2edb4d6649898a923063ceebf8b
Cr-Commit-Position: refs/heads/master@{#368484}

[stuartmorgan, 2016-01-08 23:08:19]

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

[Eugene But (OOO till 7-30), 2016-01-08 23:19:58]

lgtm

[stuartmorgan, 2016-01-08 23:27:30]

The CQ bit was checked by stuartmorgan@chromium.org

[commit-bot: I haz the power, 2016-01-08 23:30:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1575683002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1575683002/1

[commit-bot: I haz the power, 2016-01-09 00:45:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-09 00:46:24]

Description was changed from

==========
Don't try to store POST data for a nil CWRSessionEntry

Due to bug 570699, it's sometimes possible not to have any current
SessionEntry/NavgitionItem. In that case, don't attempt to store
POST data on the item.

BUG=574195,570699
==========

to

==========
Don't try to store POST data for a nil CWRSessionEntry

Due to bug 570699, it's sometimes possible not to have any current
SessionEntry/NavgitionItem. In that case, don't attempt to store
POST data on the item.

BUG=574195,570699

Committed: https://crrev.com/8deee5e976def2edb4d6649898a923063ceebf8b
Cr-Commit-Position: refs/heads/master@{#368484}
==========

[commit-bot: I haz the power, 2016-01-09 00:46:24]

Patchset 1 (id:??) landed as
https://crrev.com/8deee5e976def2edb4d6649898a923063ceebf8b
Cr-Commit-Position: refs/heads/master@{#368484}