Revert of Remove some ifdefs from ash since it only supports ChromeOS now.

Revert of Remove some ifdefs from ash since it only supports ChromeOS now. (patchset #3 id:40001 of https://codereview.chromium.org/2631623003/ )

Reason for revert:
ASH_EXPORT was necessary after all.

Original issue's description:
> Remove some ifdefs from ash since it only supports ChromeOS now.
> 
> BUG=666773
> 
> Review-Url: https://codereview.chromium.org/2631623003
> Cr-Commit-Position: refs/heads/master@{#444590}
> Committed: https://chromium.googlesource.com/chromium/src/+/4471855e032876c6194f5a414fa72f28b30e057d

TBR=jamescook@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=666773
Review-Url: https://codereview.chromium.org/2639323003
Cr-Commit-Position: refs/heads/master@{#444601}
Committed: https://chromium.googlesource.com/chromium/src/+/095fbc7f5a33b47c9506cecf8007e809552aa7b1

[Evan Stade, 2017-01-19 02:09:31]

The CQ bit was checked by estade@chromium.org

[Evan Stade, 2017-01-19 02:09:32]

Created Revert of Remove some ifdefs from ash since it only supports ChromeOS
now.

[commit-bot: I haz the power, 2017-01-19 02:09:54]

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, 2017-01-19 02:10:34]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484791771803350, "parent_rev":
"12c8d70173fc1a04fa588b75be71ab5e80655c60", "commit_rev":
"095fbc7f5a33b47c9506cecf8007e809552aa7b1"}

[commit-bot: I haz the power, 2017-01-19 02:11:09]

Description was changed from

==========
Revert of Remove some ifdefs from ash since it only supports ChromeOS now.
(patchset #3 id:40001 of https://codereview.chromium.org/2631623003/ )

Reason for revert:
ASH_EXPORT was necessary after all.

Original issue's description:
> Remove some ifdefs from ash since it only supports ChromeOS now.
> 
> BUG=666773
> 
> Review-Url: https://codereview.chromium.org/2631623003
> Cr-Commit-Position: refs/heads/master@{#444590}
> Committed:
https://chromium.googlesource.com/chromium/src/+/4471855e032876c6194f5a414fa7...

TBR=jamescook@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=666773
==========

to

==========
Revert of Remove some ifdefs from ash since it only supports ChromeOS now.
(patchset #3 id:40001 of https://codereview.chromium.org/2631623003/ )

Reason for revert:
ASH_EXPORT was necessary after all.

Original issue's description:
> Remove some ifdefs from ash since it only supports ChromeOS now.
> 
> BUG=666773
> 
> Review-Url: https://codereview.chromium.org/2631623003
> Cr-Commit-Position: refs/heads/master@{#444590}
> Committed:
https://chromium.googlesource.com/chromium/src/+/4471855e032876c6194f5a414fa7...

TBR=jamescook@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=666773

Review-Url: https://codereview.chromium.org/2639323003
Cr-Commit-Position: refs/heads/master@{#444601}
Committed:
https://chromium.googlesource.com/chromium/src/+/095fbc7f5a33b47c9506cecf8007...
==========

[commit-bot: I haz the power, 2017-01-19 02:11:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/095fbc7f5a33b47c9506cecf8007...