sync: add DEPS files to subdirs

chrome/browser/sync/engine/nigori_util.h

Index: chrome/browser/sync/engine/nigori_util.h
diff --git a/chrome/browser/sync/syncable/nigori_util.h b/chrome/browser/sync/engine/nigori_util.h
similarity index 88%
rename from chrome/browser/sync/syncable/nigori_util.h
rename to chrome/browser/sync/engine/nigori_util.h
index f8223f520c3b84a9beca1aba5c1af36c95349b20..3d694c1cffb1e4267edbb601f6d6503c50dda2ed 100644
--- a/chrome/browser/sync/syncable/nigori_util.h
+++ b/chrome/browser/sync/engine/nigori_util.h
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Various utility methods for nigory-based multi-type encryption.
+// Various utility methods for nigori-based multi-type encryption.
 
-#ifndef CHROME_BROWSER_SYNC_SYNCABLE_NIGORI_UTIL_H_
-#define CHROME_BROWSER_SYNC_SYNCABLE_NIGORI_UTIL_H_
+#ifndef CHROME_BROWSER_SYNC_ENGINE_NIGORI_UTIL_H_
+#define CHROME_BROWSER_SYNC_ENGINE_NIGORI_UTIL_H_
 #pragma once
 
 #include "chrome/browser/sync/protocol/nigori_specifics.pb.h"
@@ -51,4 +51,4 @@ bool VerifyDataTypeEncryption(BaseTransaction* const trans,
 
 }  // namespace syncable
 
-#endif  // CHROME_BROWSER_SYNC_SYNCABLE_NIGORI_UTIL_H_
+#endif  // CHROME_BROWSER_SYNC_ENGINE_NIGORI_UTIL_H_