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

sync/internal_api/public/util/sync_string_conversions.h

Index: sync/internal_api/public/util/sync_string_conversions.h
diff --git a/sync/internal_api/public/util/sync_string_conversions.h b/sync/internal_api/public/util/sync_string_conversions.h
index 1e83c73b8e703a34469a73335395df408490cef4..0b33a7dac3d233786bbe6928b215044c2b9bd97a 100644
--- a/sync/internal_api/public/util/sync_string_conversions.h
+++ b/sync/internal_api/public/util/sync_string_conversions.h
@@ -1,22 +1,23 @@
-// 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_INTERNAL_API_PUBLIC_UTIL_SYNC_STRING_CONVERSIONS_H_
 #define SYNC_INTERNAL_API_PUBLIC_UTIL_SYNC_STRING_CONVERSIONS_H_
 
+#include "sync/base/sync_export.h"
 #include "sync/internal_api/public/sync_encryption_handler.h"
 #include "sync/internal_api/public/sync_manager.h"
 
 namespace syncer {
 
-const char* ConnectionStatusToString(ConnectionStatus status);
+SYNC_EXPORT const char* ConnectionStatusToString(ConnectionStatus status);
 
 // Returns the string representation of a PassphraseRequiredReason value.
-const char* PassphraseRequiredReasonToString(
+SYNC_EXPORT const char* PassphraseRequiredReasonToString(
     PassphraseRequiredReason reason);
 
-const char* PassphraseTypeToString(PassphraseType type);
+SYNC_EXPORT const char* PassphraseTypeToString(PassphraseType type);
 
 const char* BootstrapTokenTypeToString(BootstrapTokenType type);
 }