Add a Utils class for the Physical Web

Add a Utils class for the Physical Web

Several methods that are used in the diagnostics page will be needed
for UMA, so it's best to preemptively pull them out into a Utils class.

BUG=594194
Committed: https://crrev.com/fda15c7a0c964e16dfed0c6e3f64c343e189b38d
Cr-Commit-Position: refs/heads/master@{#387030}

[cco3, 2016-04-12 23:57:33]

cco3@chromium.org changed reviewers:
+ mattreynolds@chromium.org

[mattreynolds, 2016-04-13 00:00:31]

lgtm

[cco3, 2016-04-13 00:01:49]

cco3@chromium.org changed reviewers:
+ nyquist@chromium.org, yfriedman@chromium.org

[cco3, 2016-04-13 00:02:26]

This is safe part of a recently reverted commit.

https://codereview.chromium.org/1878063002/

[Yaron, 2016-04-13 15:51:01]

lgtm

[cco3, 2016-04-13 17:25:57]

The CQ bit was checked by cco3@chromium.org

[commit-bot: I haz the power, 2016-04-13 17:26:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1885673004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1885673004/1

[commit-bot: I haz the power, 2016-04-13 18:11:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-13 18:13:57]

Description was changed from

==========
Add a Utils class for the Physical Web

Several methods that are used in the diagnostics page will be needed
for UMA, so it's best to preemptively pull them out into a Utils class.

BUG=594194
==========

to

==========
Add a Utils class for the Physical Web

Several methods that are used in the diagnostics page will be needed
for UMA, so it's best to preemptively pull them out into a Utils class.

BUG=594194

Committed: https://crrev.com/fda15c7a0c964e16dfed0c6e3f64c343e189b38d
Cr-Commit-Position: refs/heads/master@{#387030}
==========

[commit-bot: I haz the power, 2016-04-13 18:13:58]

Patchset 1 (id:??) landed as
https://crrev.com/fda15c7a0c964e16dfed0c6e3f64c343e189b38d
Cr-Commit-Position: refs/heads/master@{#387030}