Fix compilation error by unused functions under ceratin build configuration.

Fix compilation error by unused functions under ceratin build configuration.

Existing code will not build when building chromeos_unittests target following the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chromium-browser
with BOARD=x86-generic, for example.

TEST=chromeos_unittest built successfully following the instruction above, and the test passed.

Committed: https://crrev.com/5503269ae5822661217e13801bbd44df6fe3ddb2
Cr-Commit-Position: refs/heads/master@{#419128}

[yamaguchi, 2016-09-15 13:53:30]

Description was changed from

==========
Fix compilation error by unused functions which happens with some boards (e.g.
link).

Existing code will not build when building chromeos_unittests target following
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=link.

TEST=unit test built successfully following the simple chrome for link
==========

to

==========
Fix compilation error by unused functions which happens with some boards (e.g.
link).

Existing code will not build when building chromeos_unittests target following
the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=link.

TEST=chromeos_unittest built successfully and passes following the simple chrome
for link
==========

[yamaguchi, 2016-09-15 13:53:48]

The CQ bit was checked by yamaguchi@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-15 13:54:02]

Dry run: 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, 2016-09-15 14:34:12]

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

[commit-bot: I haz the power, 2016-09-15 14:34:13]

Dry run: This issue passed the CQ dry run.

[yamaguchi, 2016-09-15 16:08:43]

Description was changed from

==========
Fix compilation error by unused functions which happens with some boards (e.g.
link).

Existing code will not build when building chromeos_unittests target following
the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=link.

TEST=chromeos_unittest built successfully and passes following the simple chrome
for link
==========

to

==========
Fix compilation error by unused functions under ceratin build configuration.

Existing code will not build when building chromeos_unittests target following
the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=x86-generic, for example.

TEST=chromeos_unittest built successfully following the instruction above, and
the test passed.
==========

[yamaguchi, 2016-09-15 16:09:20]

yamaguchi@chromium.org changed reviewers:
+ satorux@chromium.org

[satorux1, 2016-09-16 07:46:53]

lgtm

[satorux1, 2016-09-16 07:46:58]

The CQ bit was checked by satorux@chromium.org

[commit-bot: I haz the power, 2016-09-16 07:47:13]

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, 2016-09-16 07:54:00]

Description was changed from

==========
Fix compilation error by unused functions under ceratin build configuration.

Existing code will not build when building chromeos_unittests target following
the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=x86-generic, for example.

TEST=chromeos_unittest built successfully following the instruction above, and
the test passed.
==========

to

==========
Fix compilation error by unused functions under ceratin build configuration.

Existing code will not build when building chromeos_unittests target following
the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=x86-generic, for example.

TEST=chromeos_unittest built successfully following the instruction above, and
the test passed.
==========

[commit-bot: I haz the power, 2016-09-16 07:54:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-16 07:57:01]

Description was changed from

==========
Fix compilation error by unused functions under ceratin build configuration.

Existing code will not build when building chromeos_unittests target following
the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=x86-generic, for example.

TEST=chromeos_unittest built successfully following the instruction above, and
the test passed.
==========

to

==========
Fix compilation error by unused functions under ceratin build configuration.

Existing code will not build when building chromeos_unittests target following
the simple chrome build instruction
http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/building-chro...
with BOARD=x86-generic, for example.

TEST=chromeos_unittest built successfully following the instruction above, and
the test passed.

Committed: https://crrev.com/5503269ae5822661217e13801bbd44df6fe3ddb2
Cr-Commit-Position: refs/heads/master@{#419128}
==========

[commit-bot: I haz the power, 2016-09-16 07:57:01]

Patchset 1 (id:??) landed as
https://crrev.com/5503269ae5822661217e13801bbd44df6fe3ddb2
Cr-Commit-Position: refs/heads/master@{#419128}