[USS] Show USS counters in about:sync page

components/sync/driver/glue/sync_backend_host_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/sync/driver/glue/sync_backend_host_impl.h"
 
 #include <map>
 #include <utility>
 #include <vector>
 
@@ skipping 778 matching lines @@
 void SyncBackendHostImpl::HandleDirectoryUpdateCountersUpdatedOnFrontendLoop(
     syncer::ModelType type,
     const syncer::UpdateCounters& counters) {
   if (!frontend_)
     return;
   frontend_->OnDirectoryTypeUpdateCounterUpdated(type, counters);
 }
 
 void SyncBackendHostImpl::HandleDirectoryStatusCountersUpdatedOnFrontendLoop(
     syncer::ModelType type,
-    const syncer::StatusCounters& counters) {
+    std::unique_ptr<syncer::StatusCounters> counters) {
   if (!frontend_)
     return;
-  frontend_->OnDirectoryTypeStatusCounterUpdated(type, counters);
+  frontend_->OnDatatypeStatusCounterUpdated(type, std::move(counters));
 }
 
 void SyncBackendHostImpl::UpdateInvalidationVersions(
     const std::map<syncer::ModelType, int64_t>& invalidation_versions) {
   sync_prefs_->UpdateInvalidationVersions(invalidation_versions);
 }
 
 base::MessageLoop* SyncBackendHostImpl::GetSyncLoopForTesting() {
   return registrar_->sync_thread()->message_loop();
 }
@@ skipping 26 matching lines @@
     const syncer::SyncManager::ClearServerDataCallback& frontend_callback) {
   DCHECK(ui_thread_->BelongsToCurrentThread());
   frontend_callback.Run();
 }
 
 }  // namespace browser_sync
 
 #undef SDVLOG
 
 #undef SLOG