QmlDesigner: Improving SessionChangeSets

Task-number: QDS-2998
Change-Id: I9b559bf593dd968172649d1f6c45fb9fb454f1a5
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/libs/sqlite/sqlitedatabase.h

@@ -28,6 +28,7 @@
 #include "sqlitedatabasebackend.h"
 #include "sqlitedatabaseinterface.h"
 #include "sqliteglobal.h"
+#include "sqlitesessionchangeset.h"
 #include "sqlitetable.h"
 #include "sqlitetransaction.h"
 
@@ -131,6 +132,8 @@ public:
     void setAttachedTables(const Utils::SmallStringVector &tables) override;
     void applyAndUpdateSessions() override;
 
+    SessionChangeSets changeSets() const;
+
 private:
     void deferredBegin() override;
     void immediateBegin() override;