I can't believe I let this slip through. And in the SDK no less. :(
The APIs for setting preferred activities will now throw a security
exception when used. This may break some apps, we'll see how it
goes. If it is too bad we can just make these log and not throw
anything, but I would much prefer they throw an exception.
Change-Id: I3aed434750eef8b202aa9d5bd774a0121be521c6
2ee89ea288