Don't set cpu architecture field on iOS in UMA logs.

Don't set cpu architecture field on iOS in UMA logs.

The value we were setting it to before was not correct, so this
change instead just makes the value not get set on iOS.

BUG=370104
Review-Url: https://codereview.chromium.org/2671433002
Cr-Commit-Position: refs/heads/master@{#447578}
Committed: https://chromium.googlesource.com/chromium/src/+/a86e8e115054ad167458d0379980db5473cb20de

[Alexei Svitkine (slow), 2017-02-01 01:37:08]

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

[Alexei Svitkine (slow), 2017-02-01 01:37:34]

asvitkine@chromium.org changed reviewers:
+ rkaplow@chromium.org

[commit-bot: I haz the power, 2017-02-01 01:37:55]

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

[rkaplow, 2017-02-01 01:39:00]

lgtm

[Alexei Svitkine (slow), 2017-02-01 01:43:40]

The CQ bit was unchecked by asvitkine@chromium.org

[Alexei Svitkine (slow), 2017-02-01 01:43:41]

The CQ bit was checked by asvitkine@chromium.org

[Alexei Svitkine (slow), 2017-02-01 01:43:45]

The CQ bit was checked by asvitkine@chromium.org

[commit-bot: I haz the power, 2017-02-01 01:43:48]

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, 2017-02-01 02:00:22]

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

[commit-bot: I haz the power, 2017-02-01 02:00:23]

Try jobs failed on following builders:
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)

[Alexei Svitkine (slow), 2017-02-01 18:08:23]

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

[commit-bot: I haz the power, 2017-02-01 18:08:52]

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

[Alexei Svitkine (slow), 2017-02-01 18:09:34]

The CQ bit was unchecked by asvitkine@chromium.org

[Alexei Svitkine (slow), 2017-02-01 18:09:35]

The CQ bit was checked by asvitkine@chromium.org

[Alexei Svitkine (slow), 2017-02-01 18:09:35]

The patchset sent to the CQ was uploaded after l-g-t-m from rkaplow@chromium.org
Link to the patchset: https://codereview.chromium.org/2671433002/#ps20001
(title: "Fix test.")

[commit-bot: I haz the power, 2017-02-01 18:09:53]

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, 2017-02-01 19:34:03]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1485972575206440,
"parent_rev": "d601a227965062552ca80409e60210237fa4c098", "commit_rev":
"a86e8e115054ad167458d0379980db5473cb20de"}

[commit-bot: I haz the power, 2017-02-01 19:34:41]

Description was changed from

==========
Don't set cpu architecture field on iOS in UMA logs.

The value we were setting it to before was not correct, so this
change instead just makes the value not get set on iOS.

BUG=370104
==========

to

==========
Don't set cpu architecture field on iOS in UMA logs.

The value we were setting it to before was not correct, so this
change instead just makes the value not get set on iOS.

BUG=370104

Review-Url: https://codereview.chromium.org/2671433002
Cr-Commit-Position: refs/heads/master@{#447578}
Committed:
https://chromium.googlesource.com/chromium/src/+/a86e8e115054ad167458d0379980...
==========

[commit-bot: I haz the power, 2017-02-01 19:34:42]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/a86e8e115054ad167458d0379980...

[pkl (ping after 24h if needed), 2017-05-03 17:20:35]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/2855943005/ by pkl@chromium.org.

The reason for reverting is: This breaks Chrome iOS dashboards because
cpu_architecture is the only field where we have the device model info (e.g.
iPhone7,2)..