Avoid basename conflict in text_composition

Avoid basename conflict in text_composition

Rename ui/base/ime/chromeos/text_composition to
ui/base/ime/chromeos/text_composition_chromeos, to avoid
conflict in basename with ui/base/ime/text_composition.
See http://code.google.com/p/gyp/issues/detail?id=384.

Also, ui/base/ime/chromeos/composition_text_unittest.cc
was not listed in any build file, so include the "_chromeos"
in its name too, to match, and then add it to gyp/gn files.
(I may regret that.)

BUG=490824, gyp:384, 472772
Committed: https://crrev.com/9d8b18c008df8a627e9d215fe92d354e0d574f26
Cr-Commit-Position: refs/heads/master@{#331264}

[scottmg, 2015-05-22 22:14:35]

scottmg@chromium.org changed reviewers:
+ yukishiino@chromium.org

[scottmg, 2015-05-22 22:14:46]

scottmg@chromium.org changed reviewers:
+ shuchen@chromium.org
- yukishiino@chromium.org

[scottmg, 2015-05-22 22:17:26]

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

[commit-bot: I haz the power, 2015-05-22 22:19:49]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1149223004/20001

[commit-bot: I haz the power, 2015-05-22 22:32:07]

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

[commit-bot: I haz the power, 2015-05-22 22:32:09]

Dry run: Try jobs failed on following builders:
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[scottmg, 2015-05-22 22:34:51]

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

[commit-bot: I haz the power, 2015-05-22 22:35:37]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1149223004/40001

[commit-bot: I haz the power, 2015-05-22 23:48:50]

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

[commit-bot: I haz the power, 2015-05-22 23:48:52]

Dry run: This issue passed the CQ dry run.

[Shu Chen, 2015-05-24 06:48:59]

lgtm

[scottmg, 2015-05-25 02:09:07]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2015-05-25 02:09:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1149223004/40001

[commit-bot: I haz the power, 2015-05-25 02:15:33]

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

[commit-bot: I haz the power, 2015-05-25 02:15:34]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[scottmg, 2015-05-25 02:17:31]

+thakis for

    ui/base/BUILD.gn
    ui/base/ui_base_tests.gyp

[scottmg, 2015-05-25 02:17:41]

scottmg@chromium.org changed reviewers:
+ thakis@chromium.org

[scottmg, 2015-05-25 02:17:43]

+thakis for

    ui/base/BUILD.gn
    ui/base/ui_base_tests.gyp

[Nico, 2015-05-25 04:01:10]

These two files lgtm

[scottmg, 2015-05-25 05:01:48]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2015-05-25 05:02:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1149223004/40001

[commit-bot: I haz the power, 2015-05-25 06:15:56]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-25 06:17:00]

Patchset 3 (id:??) landed as
https://crrev.com/9d8b18c008df8a627e9d215fe92d354e0d574f26
Cr-Commit-Position: refs/heads/master@{#331264}