Restrict MediaRouter selection
Restrict MediaRouter selection

Actually restrict the programmatic selection of routes by
type. (Oops.)

Change-Id: I91e837f7ecbcddb626c664fb470e8296d563498d

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base