[USS] Show USS counters in about:sync page

components/sync/driver/glue/sync_backend_host_impl_unittest.cc

Index: components/sync/driver/glue/sync_backend_host_impl_unittest.cc
diff --git a/components/sync/driver/glue/sync_backend_host_impl_unittest.cc b/components/sync/driver/glue/sync_backend_host_impl_unittest.cc
index 244167ebb8333c20f32766ab3ed3d820334cd824..d05fb2d00c9b952f87b615e32be9b160240ecf17 100644
--- a/components/sync/driver/glue/sync_backend_host_impl_unittest.cc
+++ b/components/sync/driver/glue/sync_backend_host_impl_unittest.cc
@@ -104,8 +104,10 @@ class MockSyncFrontend : public sync_driver::SyncFrontend {
                void(syncer::ModelType, const syncer::CommitCounters&));
   MOCK_METHOD2(OnDirectoryTypeUpdateCounterUpdated,
                void(syncer::ModelType, const syncer::UpdateCounters&));
-  MOCK_METHOD2(OnDirectoryTypeStatusCounterUpdated,
-               void(syncer::ModelType, const syncer::StatusCounters&));
+  // workaround GMOCK problems with std::unique_ptr<>.
+  void OnDatatypeStatusCounterUpdated(
+      syncer::ModelType,
+      std::unique_ptr<syncer::StatusCounters>) override {}
   MOCK_METHOD1(OnExperimentsChanged, void(const syncer::Experiments&));
   MOCK_METHOD1(OnActionableError,
                void(const syncer::SyncProtocolError& sync_error));