Revert of [Password manager] Temporarily add some CHECKs to investigate a crash

Revert of [Password manager] Temporarily add some CHECKs to investigate a crash (patchset #1 id:1 of https://codereview.chromium.org/1139863003/ )

Reason for revert:
The associated bug got closed, the crash is no longer observed since version 43, so the checks are overdue to be removed.

Original issue's description:
> [Password manager] Temporarily add some CHECKs to investigate a crash
> 
> Add some CHECKs to see if some of the hypotheses in http://crbug.com/486931#c3 (however unlikely they seem) could be right.
> This is in line with https://www.chromium.org/developers/coding-style#TOC-CHECK-DCHECK-and-NOTREACHED-.
> 
> BUG=486931
> 
> Committed: https://crrev.com/3e966cacd118b489ab195f03446812c7eaedfc8f
> Cr-Commit-Position: refs/heads/master@{#329393}

TBR=mkwst@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=486931

[vabr (Chromium), 2016-01-26 13:25:23]

Created Revert of [Password manager] Temporarily add some CHECKs to investigate
a crash

[vabr (Chromium), 2016-01-26 13:25:33]

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

[commit-bot: I haz the power, 2016-01-26 13:25:58]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1639643003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1639643003/1

[commit-bot: I haz the power, 2016-01-26 13:27:38]

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

[commit-bot: I haz the power, 2016-01-26 13:27:39]

Dry run: Try jobs failed on following builders:
  ios_dbg_simulator_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  ios_rel_device_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)

[vabr (Chromium), 2016-01-26 13:33:52]

Description was changed from

==========
Revert of [Password manager] Temporarily add some CHECKs to investigate a crash
(patchset #1 id:1 of https://codereview.chromium.org/1139863003/ )

Reason for revert:
The associated bug got closed, the crash is no longer observed since version 43,
so the checks are overdue to be removed.

Original issue's description:
> [Password manager] Temporarily add some CHECKs to investigate a crash
> 
> Add some CHECKs to see if some of the hypotheses in http://crbug.com/486931#c3
(however unlikely they seem) could be right.
> This is in line with
https://www.chromium.org/developers/coding-style#TOC-CHECK-DCHECK-and-NOTREAC....
> 
> BUG=486931
> 
> Committed: https://crrev.com/3e966cacd118b489ab195f03446812c7eaedfc8f
> Cr-Commit-Position: refs/heads/master@{#329393}

TBR=mkwst@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=486931
==========

to

==========
Revert of [Password manager] Temporarily add some CHECKs to investigate a crash
(patchset #1 id:1 of https://codereview.chromium.org/1139863003/ )

Reason for revert:
The associated bug got closed, the crash is no longer observed since version 43,
so the checks are overdue to be removed.

Original issue's description:
> [Password manager] Temporarily add some CHECKs to investigate a crash
> 
> Add some CHECKs to see if some of the hypotheses in http://crbug.com/486931#c3
(however unlikely they seem) could be right.
> This is in line with
https://www.chromium.org/developers/coding-style#TOC-CHECK-DCHECK-and-NOTREAC....
> 
> BUG=486931
> 
> Committed: https://crrev.com/3e966cacd118b489ab195f03446812c7eaedfc8f
> Cr-Commit-Position: refs/heads/master@{#329393}

TBR=mkwst@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=486931
==========