Device info datatype should be moved to components/sync_driver.

Device info datatype should be moved to components/sync_driver.

This change moves mock and test classes related to DeviceInfo
datatype to components/sync_driver and removes dependencies
on chrome and content layers.

The change is mostly trivial / mechanical renaming.

BUG=396136
TBR=jyasskin@chromium.org,pkasting@chromium.org,ben@chromium.org

Committed: https://crrev.com/2b537d62aecf6a6c982eec5ba6d14a0e966297ed
Cr-Commit-Position: refs/heads/master@{#297494}

[stanisc, 2014-09-30 00:35:00]

Patchset #1 (id:1) has been deleted

[stanisc, 2014-09-30 02:06:01]

Patchset #1 (id:20001) has been deleted

[stanisc, 2014-09-30 02:53:59]

Patchset #1 (id:40001) has been deleted

[stanisc, 2014-09-30 18:06:47]

stanisc@chromium.org changed reviewers:
+ jyasskin@chromium.org, maniscalco@chromium.org, pkasting@chromium.org

[stanisc, 2014-09-30 18:06:48]

maniscalco@chromium.org: Please review changes in components/sync_driver and
chrome/browser/sync. Most of them are trivial.

jyasskin@chromium.org and pkasting@chromium.org:
I included you as TBR reviewers for trivial test code changes in
chrome/browser/extensions and chrome/browser/ui.

[stanisc, 2014-09-30 18:13:52]

stanisc@chromium.org changed reviewers:
+ ben@chromium.org

[stanisc, 2014-09-30 18:13:53]

Added ben@chromium.org to TBR for a trivial change in chrome/browser/BUILD.gn -
removed two files that implement a mock class.

[Peter Kasting, 2014-09-30 18:21:53]

LGTM

[maniscalco, 2014-09-30 18:26:51]

lgtm

[stanisc, 2014-09-30 20:30:55]

The CQ bit was checked by stanisc@chromium.org

[commit-bot: I haz the power, 2014-09-30 20:32:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/612103005/60001

[commit-bot: I haz the power, 2014-09-30 20:38:24]

Committed patchset #1 (id:60001) as 71e37be89d67b275c6f844d8499f021201cb1a4a

[commit-bot: I haz the power, 2014-09-30 20:39:27]

Patchset 1 (id:??) landed as
https://crrev.com/2b537d62aecf6a6c982eec5ba6d14a0e966297ed
Cr-Commit-Position: refs/heads/master@{#297494}