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

sync/internal_api/public/read_node.h

Index: sync/internal_api/public/read_node.h
diff --git a/sync/internal_api/public/read_node.h b/sync/internal_api/public/read_node.h
index 78d67cc2a37ab07d2cdb1b745450af1fc9fbc052..50e7639e29bb44d0e3cbfe81dcaaf8371eca6c1e 100644
--- a/sync/internal_api/public/read_node.h
+++ b/sync/internal_api/public/read_node.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.
 
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/base_node.h"
 
@@ -16,7 +17,7 @@ namespace syncer {
 
 // ReadNode wraps a syncable::Entry to provide the functionality of a
 // read-only BaseNode.
-class ReadNode : public BaseNode {
+class SYNC_EXPORT ReadNode : public BaseNode {
  public:
   // Create an unpopulated ReadNode on the given transaction.  Call some flavor
   // of Init to populate the ReadNode with a database entry.