This keeps the existing app logic for looking up interwiki information
intact in ClassicInterwikiLookup. The idea is to seamlessly switch to a new
implementation when it becomes available, while also allowing us to
switch back in case of problems.
Change-Id: I7d7424345d0ce3ce90ba284006ee9615e3d99baa
This test class verifies that Interwiki currectly handles information
from the database, CDB files, and plain arrays. This is intended to
allow confident refactoring when implementing T113034.
Bug: T113034
Change-Id: I2b68d11e3e946d81fa5f5f65a28fc399e7936c0f