Removing unnecessary "using" statements.

Removing unnecessary "using" statements.

In the Chromium code style using statements are not allowed and these
ones are not even needed/used so let us just drop them.

Review-Url: https://codereview.chromium.org/2788693002
Cr-Commit-Position: refs/heads/master@{#460866}
Committed: https://chromium.googlesource.com/chromium/src/+/e6b2fb315a37379020c437f9e28d7b921e273410

[Daniel Bratell, 2017-03-30 16:28:04]

The CQ bit was checked by bratell@opera.com to run a CQ dry run

[Daniel Bratell, 2017-03-30 16:28:16]

bratell@opera.com changed reviewers:
+ fs@opera.com

[Daniel Bratell, 2017-03-30 16:28:17]

PTAL

[commit-bot: I haz the power, 2017-03-30 16:28:28]

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, 2017-03-30 18:26:52]

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

[commit-bot: I haz the power, 2017-03-30 18:26:53]

Dry run: This issue passed the CQ dry run.

[fs, 2017-03-30 20:33:09]

The CQ bit was checked by fs@opera.com

[fs, 2017-03-30 20:33:09]

lgtm

[commit-bot: I haz the power, 2017-03-30 20:35:18]

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, 2017-03-30 20:42:22]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490905989353830, "parent_rev":
"affc1ede3eec8077612c7f7fe76792d57854678f", "commit_rev":
"e6b2fb315a37379020c437f9e28d7b921e273410"}

[commit-bot: I haz the power, 2017-03-30 20:43:22]

Description was changed from

==========
Removing unnecessary "using" statements.

In the Chromium code style using statements are not allowed and these
ones are not even needed/used so let us just drop them.
==========

to

==========
Removing unnecessary "using" statements.

In the Chromium code style using statements are not allowed and these
ones are not even needed/used so let us just drop them.

Review-Url: https://codereview.chromium.org/2788693002
Cr-Commit-Position: refs/heads/master@{#460866}
Committed:
https://chromium.googlesource.com/chromium/src/+/e6b2fb315a37379020c437f9e28d...
==========

[commit-bot: I haz the power, 2017-03-30 20:43:23]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e6b2fb315a37379020c437f9e28d...