[Cleanup] Move the Easy Unlock metrics files out of the chromeos directory.

[Cleanup] Move the Easy Unlock metrics files out of the chromeos directory.

This is a cleanup change in preparation for [ http://crbug.com/450509 ], where
metrics will be logged in non-ChromeOS-only code.

BUG=450509
TEST=compiles
R=tengs@chromium.org

Committed: https://crrev.com/a3cbdfc51de0fb1c4fbd96cddd5699ca1707bc12
Cr-Commit-Position: refs/heads/master@{#314759}

[Tim Song, 2015-02-05 02:36:36]

lgtm

[Ilya Sherman, 2015-02-05 02:38:03]

The CQ bit was checked by isherman@chromium.org

[commit-bot: I haz the power, 2015-02-05 02:38:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/887093004/1

[commit-bot: I haz the power, 2015-02-05 03:46:24]

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

[commit-bot: I haz the power, 2015-02-05 03:46:25]

Try jobs failed on following builders:
  mac_chromium_rel_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Ilya Sherman, 2015-02-05 04:04:00]

The CQ bit was checked by isherman@chromium.org

[commit-bot: I haz the power, 2015-02-05 04:04:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/887093004/1

[commit-bot: I haz the power, 2015-02-05 04:58:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-05 04:59:21]

Patchset 1 (id:??) landed as
https://crrev.com/a3cbdfc51de0fb1c4fbd96cddd5699ca1707bc12
Cr-Commit-Position: refs/heads/master@{#314759}