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

sync/api/sync_data.h

-// 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.
 
 #ifndef SYNC_API_SYNC_DATA_H_
 #define SYNC_API_SYNC_DATA_H_
 
 #include <iosfwd>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/util/immutable.h"
 
 namespace sync_pb {
 class EntitySpecifics;
 class SyncEntity;
 }  // namespace sync_pb
 
 namespace syncer {
 
 // A light-weight container for immutable sync data. Pass-by-value and storage
 // in STL containers are supported and encouraged if helpful.
-class SyncData {
+class SYNC_EXPORT SyncData {
  public:
   // Creates an empty and invalid SyncData.
   SyncData();
    ~SyncData();
 
    // Default copy and assign welcome.
 
   // Helper methods for creating SyncData objects for local data.
   // The sync tag must be a string unique to this datatype and is used as a node
   // identifier server-side.
@@ skipping 76 matching lines @@
   // The actual shared sync entity being held.
   ImmutableSyncEntity immutable_entity_;
 };
 
 // gmock printer helper.
 void PrintTo(const SyncData& sync_data, std::ostream* os);
 
 }  // namespace syncer
 
 #endif  // SYNC_API_SYNC_DATA_H_