Account for the renaming of the dns_prefetch namespace to network_hints.

Account for the renaming of the dns_prefetch namespace to network_hints.

R=inferno@chromium.org, tsepez@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/ed73d5456272627d493772235d8925d04c1e2c98

[Martin Barbella, 2015-01-31 00:11:40]

PTAL. Small fix to account for a recent change that broke our builds.

[Tom Sepez, 2015-01-31 00:17:10]

RS LGTM

[Martin Barbella, 2015-01-31 00:17:31]

The CQ bit was checked by mbarbella@chromium.org

[commit-bot: I haz the power, 2015-01-31 00:17:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/888163002/1

[inferno, 2015-01-31 04:10:17]

lgtm

[commit-bot: I haz the power, 2015-01-31 11:21:22]

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

[commit-bot: I haz the power, 2015-01-31 11:21:23]

Try jobs failed on following builders:
  win8_chromium_gn_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_gn_...)

[inferno, 2015-01-31 12:17:50]

The CQ bit was checked by inferno@chromium.org

[commit-bot: I haz the power, 2015-01-31 12:18:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/888163002/1

[commit-bot: I haz the power, 2015-01-31 15:21:10]

Patchset 1 (id:??) landed as
https://crrev.com/ed73d5456272627d493772235d8925d04c1e2c98
Cr-Commit-Position: refs/heads/master@{#314056}

[inferno, 2015-01-31 15:21:14]

Committed patchset #1 (id:1) manually as
ed73d5456272627d493772235d8925d04c1e2c98 (presubmit successful).