That is not a scenario that could happen in Canada, quite frankly. In fact, there was a lot of confusion when Cyprus happened, because bail-in was a new concept. The federal Department of Finance has put out a paper on bail-in, which makes it very clear that no depositors and no taxpayers would have to step up in the extremely unlikely case that a Canadian bank would fail. Debt would be bailed in as capital.
On October 27th, 2014. See this statement in context.