Adds a test for setting empty composition text.

Adds a test for setting empty composition text.

BUG=682199
Review-Url: https://codereview.chromium.org/2710603002
Cr-Commit-Position: refs/heads/master@{#451708}
Committed: https://chromium.googlesource.com/chromium/src/+/c49d32e2554c23beb02be20061c0b9784476fe98

[Shu Chen, 2017-02-21 03:37:03]

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

[Shu Chen, 2017-02-21 03:37:14]

shuchen@chromium.org changed reviewers:
+ azurewei@chromium.org

[commit-bot: I haz the power, 2017-02-21 03:37:22]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Azure Wei, 2017-02-21 03:39:53]

lgtm

[commit-bot: I haz the power, 2017-02-21 06:05:00]

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

[commit-bot: I haz the power, 2017-02-21 06:05:01]

Dry run: This issue passed the CQ dry run.

[Shu Chen, 2017-02-21 06:14:13]

The CQ bit was checked by shuchen@chromium.org

[commit-bot: I haz the power, 2017-02-21 06:14:30]

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, 2017-02-21 06:18:43]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487657653755510, "parent_rev":
"1d4a8832edffa6fb5a0d4e217008fb959b8c9fe6", "commit_rev":
"c49d32e2554c23beb02be20061c0b9784476fe98"}

[commit-bot: I haz the power, 2017-02-21 06:20:04]

Description was changed from

==========
Adds a test for setting empty composition text.

BUG=682199
==========

to

==========
Adds a test for setting empty composition text.

BUG=682199

Review-Url: https://codereview.chromium.org/2710603002
Cr-Commit-Position: refs/heads/master@{#451708}
Committed:
https://chromium.googlesource.com/chromium/src/+/c49d32e2554c23beb02be20061c0...
==========

[commit-bot: I haz the power, 2017-02-21 06:20:05]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/c49d32e2554c23beb02be20061c0...