[Merge-M56] arc: Fix double provisioning failure reporting.

[Merge-M56] arc: Fix double provisioning failure reporting.

In case a auth code request failure occurs, error is reported.
In many cases this causes Arc bridge stop and mojo close. On mojo
close Cancel exception is reported to Arc provision step. It itself
sends one more Unknown error that overrides previous error. This CL
ignore second and next error.

TEST=Manually on device. Emulate server error and instead unknown
     error server communication error is shown.
BUG=b/33347895
BUG=671667
TBR=lhchavez@chromium.org
TBR=hidehiko@chromium.org
NOTRY=true
NOPRESUBMIT=true


Review-Url: https://codereview.chromium.org/2554743003
Cr-Commit-Position: refs/heads/master@{#436794}
(cherry picked from commit 42d24efdbeff42ab083b9d3b59ddb1a4753b370e)

[khmel, 2016-12-07 21:35:54]

Description was changed from

==========
arc: Fix double provisioning failure reporting.

In case a auth code request failure occurs, error is reported.
In many cases this causes Arc bridge stop and mojo close. On mojo
close Cancel exception is reported to Arc provision step. It itself
sends one more Unknown error that overrides previous error. This CL
ignore second and next error.

TEST=Manually on device. Emulate server error and instead unknown
     error server communication error is shown.
BUG=b/33347895
BUG=671667

Review-Url: https://codereview.chromium.org/2554743003
Cr-Commit-Position: refs/heads/master@{#436794}
(cherry picked from commit 42d24efdbeff42ab083b9d3b59ddb1a4753b370e)
==========

to

==========
[Merge-M56] arc: Fix double provisioning failure reporting.

In case a auth code request failure occurs, error is reported.
In many cases this causes Arc bridge stop and mojo close. On mojo
close Cancel exception is reported to Arc provision step. It itself
sends one more Unknown error that overrides previous error. This CL
ignore second and next error.

TEST=Manually on device. Emulate server error and instead unknown
     error server communication error is shown.
BUG=b/33347895
BUG=671667
TBR=lhchavez@chromium.org
TBR=hidehiko@chromium.org
NOTRY=true
NOPRESUBMIT=true


Review-Url: https://codereview.chromium.org/2554743003
Cr-Commit-Position: refs/heads/master@{#436794}
(cherry picked from commit 42d24efdbeff42ab083b9d3b59ddb1a4753b370e)
==========

[khmel, 2016-12-07 21:36:11]

The CQ bit was checked by khmel@chromium.org

[commit-bot: I haz the power, 2016-12-07 21:36:31]

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, 2016-12-07 21:39:06]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1481146571044240,
"parent_rev": "7606bb58c81f8a1446579dedcee322395fee9d3b", "commit_rev":
"515a206434d8bfb24fd04113918dabee72bdf3b6"}

[commit-bot: I haz the power, 2016-12-07 21:39:33]

Description was changed from

==========
[Merge-M56] arc: Fix double provisioning failure reporting.

In case a auth code request failure occurs, error is reported.
In many cases this causes Arc bridge stop and mojo close. On mojo
close Cancel exception is reported to Arc provision step. It itself
sends one more Unknown error that overrides previous error. This CL
ignore second and next error.

TEST=Manually on device. Emulate server error and instead unknown
     error server communication error is shown.
BUG=b/33347895
BUG=671667
TBR=lhchavez@chromium.org
TBR=hidehiko@chromium.org
NOTRY=true
NOPRESUBMIT=true


Review-Url: https://codereview.chromium.org/2554743003
Cr-Commit-Position: refs/heads/master@{#436794}
(cherry picked from commit 42d24efdbeff42ab083b9d3b59ddb1a4753b370e)
==========

to

==========
[Merge-M56] arc: Fix double provisioning failure reporting.

In case a auth code request failure occurs, error is reported.
In many cases this causes Arc bridge stop and mojo close. On mojo
close Cancel exception is reported to Arc provision step. It itself
sends one more Unknown error that overrides previous error. This CL
ignore second and next error.

TEST=Manually on device. Emulate server error and instead unknown
     error server communication error is shown.
BUG=b/33347895
BUG=671667
TBR=lhchavez@chromium.org
TBR=hidehiko@chromium.org
NOTRY=true
NOPRESUBMIT=true


Review-Url: https://codereview.chromium.org/2554743003
Cr-Commit-Position: refs/heads/master@{#436794}
(cherry picked from commit 42d24efdbeff42ab083b9d3b59ddb1a4753b370e)
==========

[commit-bot: I haz the power, 2016-12-07 21:39:34]

Committed patchset #2 (id:20001)