[USS] Move GetAllNodes from backend to controller

components/sync/driver/glue/sync_backend_host_impl.cc

Index: components/sync/driver/glue/sync_backend_host_impl.cc
diff --git a/components/sync/driver/glue/sync_backend_host_impl.cc b/components/sync/driver/glue/sync_backend_host_impl.cc
index 122d4803dbe7924eb11aac70fbcf42314a0078e6..667e7b8ecab46164767a28c9c71ed3652c5e0475 100644
--- a/components/sync/driver/glue/sync_backend_host_impl.cc
+++ b/components/sync/driver/glue/sync_backend_host_impl.cc
@@ -519,16 +519,6 @@ void SyncBackendHostImpl::DisableDirectoryTypeDebugInfoForwarding() {
                  core_));
 }
 
-void SyncBackendHostImpl::GetAllNodesForTypes(
-    syncer::ModelTypeSet types,
-    base::Callback<void(const std::vector<syncer::ModelType>&,
-                        ScopedVector<base::ListValue>)> callback) {
-  DCHECK(initialized());
-  registrar_->sync_thread()->task_runner()->PostTask(
-      FROM_HERE, base::Bind(&SyncBackendHostCore::GetAllNodesForTypes, core_,
-                            types, frontend_task_runner_, callback));
-}
-
 void SyncBackendHostImpl::InitCore(
     std::unique_ptr<DoInitializeOptions> options) {
   registrar_->sync_thread()->task_runner()->PostTask(