[Sync] Fix bug where the preferences commit delay is used for everything

Introduced by 96243.

BUG=
TEST=


Review URL: http://codereview.chromium.org/7622015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96435 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/sync/engine/syncapi.cc

@@ -2567,7 +2567,7 @@ void SyncManager::SyncInternal::RequestNudgeForDataType(
       break;
     default:
       nudge_delay =
-          TimeDelta::FromMilliseconds(kPreferencesNudgeDelayMilliseconds);
+          TimeDelta::FromMilliseconds(kDefaultNudgeDelayMilliseconds);
       break;
   }
   syncable::ModelTypeBitSet types;