Remove unused "using" statements in WebKit/Source/platform.

Remove unused "using" statements in WebKit/Source/platform.

Some "using" statements that were no longer used lingered in the
source code so let us remove them.

Review-Url: https://codereview.chromium.org/2841923002
Cr-Commit-Position: refs/heads/master@{#467654}
Committed: https://chromium.googlesource.com/chromium/src/+/fb30cf0a0e61cfaf953ed2347ddfa876d139d1eb

[Daniel Bratell, 2017-04-25 16:02:26]

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

[commit-bot: I haz the power, 2017-04-25 16:02:50]

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, 2017-04-25 16:24:44]

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

[commit-bot: I haz the power, 2017-04-25 16:24:45]

Dry run: Try jobs failed on following builders:
  cast_shell_linux on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)
  mac_chromium_compile_dbg_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)

[Daniel Bratell, 2017-04-25 17:15:20]

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

[commit-bot: I haz the power, 2017-04-25 17:15:47]

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, 2017-04-25 19:00:33]

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

[commit-bot: I haz the power, 2017-04-25 19:00:34]

Dry run: This issue passed the CQ dry run.

[Daniel Bratell, 2017-04-27 09:20:13]

bratell@opera.com changed reviewers:
+ mkwst@chromium.org

[Daniel Bratell, 2017-04-27 09:20:14]

Hi, can you take a look at this patch that removes unused "using" statements
from the blink platform code? They make my jumbo builds unhappy, but that
shouldn't be there anyway so we can just remove them.

[Mike West, 2017-04-27 11:08:54]

Less `using` is better `using`! LGTM.

[Daniel Bratell, 2017-04-27 11:16:27]

The CQ bit was checked by bratell@opera.com

[commit-bot: I haz the power, 2017-04-27 11:16:37]

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, 2017-04-27 13:19:13]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1493291787675960,
"parent_rev": "b5ef8f515cc03722022570a06b8601fac659f2ee", "commit_rev":
"fb30cf0a0e61cfaf953ed2347ddfa876d139d1eb"}

[commit-bot: I haz the power, 2017-04-27 13:19:22]

Description was changed from

==========
Remove unused "using" statements in WebKit/Source/platform.

Some "using" statements that were no longer used lingered in the
source code so let us remove them.
==========

to

==========
Remove unused "using" statements in WebKit/Source/platform.

Some "using" statements that were no longer used lingered in the
source code so let us remove them.

Review-Url: https://codereview.chromium.org/2841923002
Cr-Commit-Position: refs/heads/master@{#467654}
Committed:
https://chromium.googlesource.com/chromium/src/+/fb30cf0a0e61cfaf953ed2347ddf...
==========

[commit-bot: I haz the power, 2017-04-27 13:19:24]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/fb30cf0a0e61cfaf953ed2347ddf...