Bug 559267 - ConditionalDeleteService assumes containment references

- add a canRemove(...) API to the ConditionalDeleteService
- use it instead of canDelete(...) where appropriate

Change-Id: I488060ca9f4ce2217722292fc8d16600c136e96b
Signed-off-by: Christian W. Damus <give.a.damus@gmail.com>
5 files changed