make new syncer thread the default.

chrome/browser/sync/engine/nudge_source.h

Index: chrome/browser/sync/engine/nudge_source.h
diff --git a/chrome/browser/sync/engine/nudge_source.h b/chrome/browser/sync/engine/nudge_source.h
index 3e3b3ae8820f6b810470335df75276825bb9d831..fc9b02a701b48116cae06843e4c36f7135a4354e 100644
--- a/chrome/browser/sync/engine/nudge_source.h
+++ b/chrome/browser/sync/engine/nudge_source.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -8,8 +8,6 @@
 
 namespace browser_sync {
 
-namespace s3 {
-
 enum NudgeSource {
   NUDGE_SOURCE_UNKNOWN = 0,
   // We received an invalidation message and are nudging to check for updates.
@@ -20,7 +18,6 @@ enum NudgeSource {
   NUDGE_SOURCE_CONTINUATION,
 };
 
-}  // namespace s3
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_ENGINE_NUDGE_SOURCE_H_