[sync] Componentize sync: Part 2: Add SYNC_EXPORTs to files in src/sync/

sync/util/nigori.h

Index: sync/util/nigori.h
diff --git a/sync/util/nigori.h b/sync/util/nigori.h
index a33f0b61624da15ca5c8da8f328adbaf05f63121..cd67bf9ec47a4aba00b2ed1ad730fc58b1f79918 100644
--- a/sync/util/nigori.h
+++ b/sync/util/nigori.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2012 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.
 
@@ -8,6 +8,7 @@
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
+#include "sync/base/sync_export.h"
 
 namespace crypto {
 class SymmetricKey;
@@ -24,7 +25,7 @@ namespace syncer {
 // and retrieve the secret.
 //
 // TODO: Link to doc.
-class Nigori {
+class SYNC_EXPORT Nigori {
  public:
   enum Type {
     Password = 1,