Reland of: chromeos: Add CPU temperature reader

Reland of: chromeos: Add CPU temperature reader

Original issue: https://codereview.chromium.org/2823583002/

Reason for revert: Build errors due to non-exported symbols

=====================================

Reads from hwmon in sysfs.

This does the same thing as ReadCPUTempInfo() in
chrome/browser/chromeos/policy/device_status_collector.cc, but it is
available to the rest of Chrome.

BUG=chromium:709102
Review-Url: https://codereview.chromium.org/2838853002
Cr-Commit-Position: refs/heads/master@{#466999}
Committed: https://chromium.googlesource.com/chromium/src/+/a15eba14554af2a846bf977301dee043a0aa54a1

[Simon Que, 2017-04-25 11:56:47]

sque@chromium.org changed reviewers:
+ derat@chromium.org, stevenjb@chromium.org

[Daniel Erat, 2017-04-25 13:38:30]

lgtm

[Simon Que, 2017-04-25 13:50:44]

The CQ bit was checked by sque@chromium.org

[commit-bot: I haz the power, 2017-04-25 13:50:59]

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, 2017-04-25 15:41:40]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1493128244719610,
"parent_rev": "693b4e9cf59c7dc649b75d5e47cde01017014b14", "commit_rev":
"265bbec5e4e0ee5a5c8083ae3d6b8d1e8dcd4559"}

[commit-bot: I haz the power, 2017-04-25 15:41:55]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1493128244719610,
"parent_rev": "bf332e3e4c1ccfcc5ae69e2a63ea34879c4e3dee", "commit_rev":
"a15eba14554af2a846bf977301dee043a0aa54a1"}

[commit-bot: I haz the power, 2017-04-25 15:42:02]

Description was changed from

==========
Reland of: chromeos: Add CPU temperature reader

Original issue: https://codereview.chromium.org/2823583002/

Reason for revert: Build errors due to non-exported symbols

=====================================

Reads from hwmon in sysfs.

This does the same thing as ReadCPUTempInfo() in
chrome/browser/chromeos/policy/device_status_collector.cc, but it is
available to the rest of Chrome.

BUG=chromium:709102
==========

to

==========
Reland of: chromeos: Add CPU temperature reader

Original issue: https://codereview.chromium.org/2823583002/

Reason for revert: Build errors due to non-exported symbols

=====================================

Reads from hwmon in sysfs.

This does the same thing as ReadCPUTempInfo() in
chrome/browser/chromeos/policy/device_status_collector.cc, but it is
available to the rest of Chrome.

BUG=chromium:709102

Review-Url: https://codereview.chromium.org/2838853002
Cr-Commit-Position: refs/heads/master@{#466999}
Committed:
https://chromium.googlesource.com/chromium/src/+/a15eba14554af2a846bf977301de...
==========

[commit-bot: I haz the power, 2017-04-25 15:42:03]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/a15eba14554af2a846bf977301de...