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

sync/internal_api/public/sync_manager_factory.h

Index: sync/internal_api/public/sync_manager_factory.h
diff --git a/sync/internal_api/public/sync_manager_factory.h b/sync/internal_api/public/sync_manager_factory.h
index 9f566c2ce3032a697dc1c526fba3fd17cd4523ca..12fa52fdef81f7abe134ef84d5935010747c62ff 100644
--- a/sync/internal_api/public/sync_manager_factory.h
+++ b/sync/internal_api/public/sync_manager_factory.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.
 
@@ -8,13 +8,14 @@
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
+#include "sync/base/sync_export.h"
 
 namespace syncer {
 
 class SyncManager;
 
 // Helper class to allow dependency injection of the SyncManager.
-class SyncManagerFactory {
+class SYNC_EXPORT SyncManagerFactory {
  public:
   SyncManagerFactory();
   virtual ~SyncManagerFactory();