If its the state aid enforcement, then the EU won't. The EU will force Ireland to collect the missing tax because they can't let the infringement succeed i.e. a fair market must be restored.
I don't know which action you are specifically referring to but I know Google have broken any number of accounting rules though e.g. in the UK they claim to carry out no sales activities, all happening in Ireland, despite of course collecting millions of GBP and employing hundreds of UK sales staff...
