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

Reland of Don't set cpu architecture field on iOS in UMA logs. (patchset #1 id:1 of https://codereview.chromium.org/2855943005/ )

Reason for revert:
Can be relanded now that we're filling in hardware class on iOS.

Original issue's description:
> Revert of Don't set cpu architecture field on iOS in UMA logs. (patchset #2 id:20001 of https://codereview.chromium.org/2671433002/ )
> 
> Reason for revert:
> This breaks Chrome iOS dashboards because cpu_architecture is the only field where we have the device model info (e.g. iPhone7,2).
> 
> Original issue's description:
> > 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
> 
> TBR=rkaplow@chromium.org,asvitkine@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=370104, 718080
> 
> Review-Url: https://codereview.chromium.org/2855943005
> Cr-Commit-Position: refs/heads/master@{#469062}
> Committed: https://chromium.googlesource.com/chromium/src/+/9f89092a8f533da1537b0a441b1e137b3d3b2728

TBR=pkl@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=370104, 718080
Review-Url: https://codereview.chromium.org/2863813002
Cr-Commit-Position: refs/heads/master@{#469638}
Committed: https://chromium.googlesource.com/chromium/src/+/b293236194e22d784a5d77a04ebfad88e33f824e

[Alexei Svitkine (slow), 2017-05-04 23:01:41]

The CQ bit was checked by asvitkine@chromium.org

[Alexei Svitkine (slow), 2017-05-04 23:01:41]

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

[Alexei Svitkine (slow), 2017-05-04 23:02:30]

The CQ bit was unchecked by asvitkine@chromium.org

[pkl (ping after 24h if needed), 2017-05-05 01:58:55]

LGTM. If this lands on trunk, it will be M60 and I will need to make sure that
we change our data processing scripts to use hardware_class instead of
cpu_architecture.

[Alexei Svitkine (slow), 2017-05-05 13:06:16]

The CQ bit was checked by asvitkine@chromium.org

[commit-bot: I haz the power, 2017-05-05 13:06:30]

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, 2017-05-05 14:02:51]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493989576013950, "parent_rev":
"6d082718c5369f7bb080cb2ff8923e7bc51fe648", "commit_rev":
"b293236194e22d784a5d77a04ebfad88e33f824e"}

[commit-bot: I haz the power, 2017-05-05 14:03:00]

Description was changed from

==========
Reland of Don't set cpu architecture field on iOS in UMA logs. (patchset #1 id:1
of https://codereview.chromium.org/2855943005/ )

Reason for revert:
Can be relanded now that we're filling in hardware class on iOS.

Original issue's description:
> Revert of Don't set cpu architecture field on iOS in UMA logs. (patchset #2
id:20001 of https://codereview.chromium.org/2671433002/ )
> 
> Reason for revert:
> This breaks Chrome iOS dashboards because cpu_architecture is the only field
where we have the device model info (e.g. iPhone7,2).
> 
> Original issue's description:
> > 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...
> 
> TBR=rkaplow@chromium.org,asvitkine@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=370104, 718080
> 
> Review-Url: https://codereview.chromium.org/2855943005
> Cr-Commit-Position: refs/heads/master@{#469062}
> Committed:
https://chromium.googlesource.com/chromium/src/+/9f89092a8f533da1537b0a441b1e...

TBR=pkl@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=370104, 718080
==========

to

==========
Reland of Don't set cpu architecture field on iOS in UMA logs. (patchset #1 id:1
of https://codereview.chromium.org/2855943005/ )

Reason for revert:
Can be relanded now that we're filling in hardware class on iOS.

Original issue's description:
> Revert of Don't set cpu architecture field on iOS in UMA logs. (patchset #2
id:20001 of https://codereview.chromium.org/2671433002/ )
> 
> Reason for revert:
> This breaks Chrome iOS dashboards because cpu_architecture is the only field
where we have the device model info (e.g. iPhone7,2).
> 
> Original issue's description:
> > 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...
> 
> TBR=rkaplow@chromium.org,asvitkine@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=370104, 718080
> 
> Review-Url: https://codereview.chromium.org/2855943005
> Cr-Commit-Position: refs/heads/master@{#469062}
> Committed:
https://chromium.googlesource.com/chromium/src/+/9f89092a8f533da1537b0a441b1e...

TBR=pkl@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=370104, 718080

Review-Url: https://codereview.chromium.org/2863813002
Cr-Commit-Position: refs/heads/master@{#469638}
Committed:
https://chromium.googlesource.com/chromium/src/+/b293236194e22d784a5d77a04ebf...
==========

[commit-bot: I haz the power, 2017-05-05 14:03:02]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/b293236194e22d784a5d77a04ebf...