Fix ignored invalidation data in ScalaCompile
Review Request #2018 - Created April 1, 2015 and submitted
|areitz, benjyw, nhoward_tw, patricklaw|
The invalidation data in ScalaCompile was being ignored, due to overriding the wrong method... this probably happened due to a bad merge, but I've made the parent method abstract to avoid this issue in the future.
- Fix ignored invalidation data, and make abstract to prevent further issues