Remove stl_util's STLElementDeleter from sync.

components/sync/driver/glue/sync_backend_host_mock.cc

Index: components/sync/driver/glue/sync_backend_host_mock.cc
diff --git a/components/sync/driver/glue/sync_backend_host_mock.cc b/components/sync/driver/glue/sync_backend_host_mock.cc
index 7f7f84ecb39a7422b7c128305ac08716b624c669..f96b6c6e27b4d1075952143dd42d105e89049d9d 100644
--- a/components/sync/driver/glue/sync_backend_host_mock.cc
+++ b/components/sync/driver/glue/sync_backend_host_mock.cc
@@ -140,7 +140,8 @@ void SyncBackendHostMock::DisableDirectoryTypeDebugInfoForwarding() {}
 void SyncBackendHostMock::GetAllNodesForTypes(
     syncer::ModelTypeSet types,
     base::Callback<void(const std::vector<syncer::ModelType>& type,
-                        ScopedVector<base::ListValue>)> callback) {}
+                        std::vector<std::unique_ptr<base::ListValue>>)>
+        callback) {}
 
 void SyncBackendHostMock::set_fail_initial_download(bool should_fail) {
   fail_initial_download_ = should_fail;