build sql as a component - this will help ensure there is only one copy

sql/sql_export.h

Index: sql/sql_export.h
diff --git a/sql/sql_export.h b/sql/sql_export.h
new file mode 100644
index 0000000000000000000000000000000000000000..92a01cb20edeb1ba855ed08845d099d55371e2c4
--- /dev/null
+++ b/sql/sql_export.h
@@ -0,0 +1,26 @@
+// Copyright (c) 2011 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 SQL_EXPORT_H_
+#define SQL_EXPORT_H_
+#pragma once
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(SQL_IMPLEMENTATION)
+#define SQL_EXPORT __declspec(dllexport)
+#else
+#define SQL_EXPORT __declspec(dllimport)
+#endif  // defined(SQL_IMPLEMENTATION)
+
+#else // defined(WIN32)
+#define SQL_EXPORT __attribute__((visibility("default")))
+#endif
+
+#else // defined(COMPONENT_BUILD)
+#define SQL_EXPORT
+#endif
+
+#endif  // SQL_EXPORT_H_