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

sql/statement.h

Index: sql/statement.h
diff --git a/sql/statement.h b/sql/statement.h
index dbb96713e33e916f97bd8c1c154826c4c9f6b411..4a735785980f37cce8887e15250a22ed9e680a79 100644
--- a/sql/statement.h
+++ b/sql/statement.h
@@ -13,6 +13,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "sql/connection.h"
+#include "sql/sql_export.h"
 
 namespace sql {
 
@@ -38,7 +39,7 @@ enum ColType {
 // Step() and Run() just return true to signal success. If you want to handle
 // specific errors such as database corruption, install an error handler in
 // in the connection object using set_error_delegate().
-class Statement {
+class SQL_EXPORT Statement {
  public:
   // Creates an uninitialized statement. The statement will be invalid until
   // you initialize it via Assign.