[Sync] Move //components/sync to the syncer namespace, take 2.

components/sync/device_info/device_info.h

Index: components/sync/device_info/device_info.h
diff --git a/components/sync/device_info/device_info.h b/components/sync/device_info/device_info.h
index 664741e3ee1941c0cd66b90db95417d6ce135333..2dc1326e3cc382401471874d6b1d07cacd3d6087 100644
--- a/components/sync/device_info/device_info.h
+++ b/components/sync/device_info/device_info.h
@@ -15,7 +15,7 @@ namespace base {
 class DictionaryValue;
 }
 
-namespace sync_driver {
+namespace syncer {
 
 // A class that holds information regarding the properties of a device.
 class DeviceInfo {
@@ -96,6 +96,6 @@ class DeviceInfo {
   DISALLOW_COPY_AND_ASSIGN(DeviceInfo);
 };
 
-}  // namespace sync_driver
+}  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_DEVICE_INFO_DEVICE_INFO_H_