Code cleanup of (I)TrkObserverTool (ATLASRECTS-3038)
Code cleanup of (I)TrkObserverTool
- Add const to methods as much as possible.
- Add virtual and override to inherit methods.
- Use DeclareInterfaceID.
- Use extends.
- Use default destructors.
- Move initialization to header files.
- Replace tabs by spaces.
- Change indentation.
Edited by Susumu Oda