Try to work around a clang/win bug.

Try to work around a clang/win bug.

It (incorrectly) complains:

..\..\content/browser/background_sync/background_sync_registration_options.h(21,11) : error: cannot use defaulted default constructor of 'BackgroundSyncRegistrationOptions' within the class outside of member functions because 'min_period' has an initializer
  int64_t min_period = 0;
          ^

BUG=488634
TBR=jkarlin@chromium.org
NOTRY=true

Committed: https://crrev.com/f4c3e76906caa9d1fa308a30a15f48dd1f2e5a59
Cr-Commit-Position: refs/heads/master@{#337326}

[Nico, 2015-07-03 17:50:06]

:-/

[Nico, 2015-07-03 17:50:11]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2015-07-03 17:50:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1215613006/1

[commit-bot: I haz the power, 2015-07-03 18:20:32]

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

[commit-bot: I haz the power, 2015-07-03 18:20:34]

Try jobs failed on following builders:
  win_chromium_x64_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

(exceeded global retry quota)

[Nico, 2015-07-03 18:22:39]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2015-07-03 18:22:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1215613006/1

[commit-bot: I haz the power, 2015-07-03 19:29:19]

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

[commit-bot: I haz the power, 2015-07-03 19:29:20]

Try jobs failed on following builders:
  win_chromium_x64_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[Nico, 2015-07-03 19:54:56]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2015-07-03 19:55:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1215613006/1

[commit-bot: I haz the power, 2015-07-03 19:58:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-03 19:59:32]

Patchset 1 (id:??) landed as
https://crrev.com/f4c3e76906caa9d1fa308a30a15f48dd1f2e5a59
Cr-Commit-Position: refs/heads/master@{#337326}