Use base::STLSetDifference() in place of std::set_difference().

Use base::STLSetDifference() in place of std::set_difference().

BUG=254066
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266293

[Sungmann Cho, 2014-04-25 05:09:44]

Please take a look. Thanks.

[perkj_chrome, 2014-04-25 06:48:47]

LGTM

[perkj_chrome, 2014-04-25 06:48:50]

The CQ bit was checked by perkj@chromium.org

[commit-bot: I haz the power, 2014-04-25 08:24:26]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sungmann.cho@navercorp.com/253523004/1

[commit-bot: I haz the power, 2014-04-25 08:57:59]

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

[commit-bot: I haz the power, 2014-04-25 08:58:01]

Try jobs failed on following builders:
  tryserver.chromium on chromium_presubmit

[Sungmann Cho, 2014-04-25 10:05:32]

The chromium_presubmit fails with the message "Missing LGTM from an OWNER".
But perkj@ is in the OWNER. What's wrong with me? :(

[perkj_chrome, 2014-04-25 10:17:06]

On 2014/04/25 10:05:32, Sungmann Cho wrote:
> The chromium_presubmit fails with the message "Missing LGTM from an OWNER".
> But perkj@ is in the OWNER. What's wrong with me? :(

weird. Does it matter if you click the commit button?

[Sungmann Cho, 2014-04-25 10:22:40]

The CQ bit was checked by sungmann.cho@navercorp.com

[commit-bot: I haz the power, 2014-04-25 12:59:48]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sungmann.cho@navercorp.com/253523004/1

[commit-bot: I haz the power, 2014-04-25 23:45:37]

Change committed as 266293