Reland of Delete unused code from systeminfo.

Reland of Delete unused code from systeminfo. (patchset #1 id:1 of https://codereview.webrtc.org/2584563004/ )

Reason for revert:
Relanding as downstream has been fixed.

Original issue's description:
> Revert of Delete unused code from systeminfo. (patchset #3 id:40001 of https://codereview.webrtc.org/2578323005/ )
> 
> Reason for revert:
> Breaks downstream build.
> 
> Original issue's description:
> > Delete unused code from systeminfo.
> > 
> > BUG=webrtc:6906
> > 
> > Review-Url: https://codereview.webrtc.org/2578323005
> > Cr-Commit-Position: refs/heads/master@{#15655}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/617ca316e9363986a54926a185fac799de3869c2
> 
> TBR=perkj@webrtc.org,kthelgason@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> BUG=webrtc:6906
> 
> Review-Url: https://codereview.webrtc.org/2584563004 .
> Cr-Commit-Position: refs/heads/master@{#15660}
> Committed: https://chromium.googlesource.com/external/webrtc/+/ffb865f3e05fcba0c24baab27201ce2414b5430c

TBR=perkj@webrtc.org,skvlad@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:6906
Review-Url: https://codereview.webrtc.org/2614693002
Cr-Commit-Position: refs/heads/master@{#15956}
Committed: https://chromium.googlesource.com/external/webrtc/+/62ffe9a33921e5037eac26bf00b6a74d98166152

[kthelgason, 2017-01-04 13:00:02]

Created Reland of Delete unused code from systeminfo.

[kthelgason, 2017-01-04 13:45:53]

ptal. The downstream project has removed it's dependency on this code and the
import trybot is green.

[perkj_webrtc, 2017-01-05 19:25:44]

rs lgtm

[kthelgason, 2017-01-09 08:13:57]

The CQ bit was checked by kthelgason@webrtc.org

[commit-bot: I haz the power, 2017-01-09 08:14:00]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-01-09 08:15:30]

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

[commit-bot: I haz the power, 2017-01-09 08:15:30]

Try jobs failed on following builders:
  ios64_sim_ios9_dbg on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/ios64_sim_ios9_dbg/buil...)
  ios_arm64_dbg on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/ios_arm64_dbg/builds/16248)
  ios_dbg on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/ios_dbg/builds/21495)
  linux_libfuzzer_rel on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/linux_libfuzzer_rel/bui...)
  linux_more_configs on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/linux_more_configs/buil...)
  mac_compile_dbg on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/mac_compile_dbg/builds/...)
  mac_rel on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/mac_rel/builds/21507)

[kthelgason, 2017-01-09 08:26:49]

The CQ bit was checked by kthelgason@webrtc.org

[kthelgason, 2017-01-09 08:26:49]

The patchset sent to the CQ was uploaded after l-g-t-m from perkj@webrtc.org
Link to the patchset: https://codereview.webrtc.org/2614693002/#ps180001 (title:
"rebase")

[commit-bot: I haz the power, 2017-01-09 08:26:51]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-01-09 09:22:16]

CQ is committing da patch.

Bot data: {"patchset_id": 180001, "attempt_start_ts": 1483950409140980,
"parent_rev": "5badf5890d97e0b784ffedbed456d4962f971af3", "commit_rev":
"62ffe9a33921e5037eac26bf00b6a74d98166152"}

[commit-bot: I haz the power, 2017-01-09 09:22:18]

Description was changed from

==========
Reland of Delete unused code from systeminfo. (patchset #1 id:1 of
https://codereview.webrtc.org/2584563004/ )

Reason for revert:
Relanding as downstream has been fixed.

Original issue's description:
> Revert of Delete unused code from systeminfo. (patchset #3 id:40001 of
https://codereview.webrtc.org/2578323005/ )
> 
> Reason for revert:
> Breaks downstream build.
> 
> Original issue's description:
> > Delete unused code from systeminfo.
> > 
> > BUG=webrtc:6906
> > 
> > Review-Url: https://codereview.webrtc.org/2578323005
> > Cr-Commit-Position: refs/heads/master@{#15655}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/617ca316e9363986a54926a18...
> 
> TBR=perkj@webrtc.org,kthelgason@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> BUG=webrtc:6906
> 
> Review-Url: https://codereview.webrtc.org/2584563004 .
> Cr-Commit-Position: refs/heads/master@{#15660}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/ffb865f3e05fcba0c24baab27...

TBR=perkj@webrtc.org,skvlad@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:6906
==========

to

==========
Reland of Delete unused code from systeminfo. (patchset #1 id:1 of
https://codereview.webrtc.org/2584563004/ )

Reason for revert:
Relanding as downstream has been fixed.

Original issue's description:
> Revert of Delete unused code from systeminfo. (patchset #3 id:40001 of
https://codereview.webrtc.org/2578323005/ )
> 
> Reason for revert:
> Breaks downstream build.
> 
> Original issue's description:
> > Delete unused code from systeminfo.
> > 
> > BUG=webrtc:6906
> > 
> > Review-Url: https://codereview.webrtc.org/2578323005
> > Cr-Commit-Position: refs/heads/master@{#15655}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/617ca316e9363986a54926a18...
> 
> TBR=perkj@webrtc.org,kthelgason@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> BUG=webrtc:6906
> 
> Review-Url: https://codereview.webrtc.org/2584563004 .
> Cr-Commit-Position: refs/heads/master@{#15660}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/ffb865f3e05fcba0c24baab27...

TBR=perkj@webrtc.org,skvlad@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:6906

Review-Url: https://codereview.webrtc.org/2614693002
Cr-Commit-Position: refs/heads/master@{#15956}
Committed:
https://chromium.googlesource.com/external/webrtc/+/62ffe9a33921e5037eac26bf0...
==========

[commit-bot: I haz the power, 2017-01-09 09:22:19]

Committed patchset #2 (id:180001) as
https://chromium.googlesource.com/external/webrtc/+/62ffe9a33921e5037eac26bf0...