tree 23ac1e21d783cb21edc737f7772cad73bbcef272
parent 860ebebc6a9a89cddc88b3f17939877a02b7a3dc
author David Pursehouse <dpursehouse@collab.net> 1570776982 +0900
committer David Pursehouse <dpursehouse@collab.net> 1570776982 +0900

TestGroupBackendTest: Use ExtensionRegistry for GroupBackend

Add the necessary support in ExtensionRegistry and update the
test to use it.

Change-Id: Iaad63bf6117c23c2b8296592a14828e6fb4d5077