Add base:: to a string16 in printing/.

Add base:: to a string16 in printing/.

R=dpapad@chromium.org
BUG=329295
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=241974

[dpapad, 2013-12-19 15:59:39]

lgtm

[dpapad, 2013-12-19 15:59:41]

lgtm

[dpapad, 2013-12-19 15:59:59]

lgtm

[Dan Beam, 2013-12-19 17:27:26]

Looks really really good to you?!

[commit-bot: I haz the power, 2013-12-19 17:28:27]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dbeam@chromium.org/101643006/1

[dpapad, 2013-12-19 17:36:06]

On 2013/12/19 17:28:27, I haz the power (commit-bot) wrote:
> CQ is trying da patch. Follow status at
> https://chromium-status.appspot.com/cq/dbeam%40chromium.org/101643006/1

Jaja, I guess that is a better explanation than "rietveld was acting up,
ignoring my lgtms".

[commit-bot: I haz the power, 2013-12-19 20:30:04]

Retried try job too often on win_rel for step(s) app_list_unittests,
ash_unittests, aura_unittests, cacheinvalidation_unittests, cc_unittests,
check_deps, check_deps2git, chrome_elf_unittests, chromedriver2_unittests,
components_unittests, compositor_unittests, content_browsertests,
content_unittests, crypto_unittests, events_unittests, google_apis_unittests,
gpu_unittests, installer_util_unittests, ipc_tests, jingle_unittests,
media_unittests, mini_installer_test, nacl_integration, ppapi_unittests,
printing_unittests, remoting_unittests, sql_unittests, sync_integration_tests,
sync_unit_tests, telemetry_unittests, views_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2013-12-19 20:37:29]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dbeam@chromium.org/101643006/1

[commit-bot: I haz the power, 2013-12-19 23:28:09]

Change committed as 241974