cc: Turn impl_side_painting and use_one_copy on in LayerTreeSettings.

content/test/web_layer_tree_view_impl_for_testing.cc

Index: content/test/web_layer_tree_view_impl_for_testing.cc
diff --git a/content/test/web_layer_tree_view_impl_for_testing.cc b/content/test/web_layer_tree_view_impl_for_testing.cc
index ecce63c39ac8b3a326886da87b412935d50661f3..543806dd33c4dcb57774f16ef97d022973cfb2af 100644
--- a/content/test/web_layer_tree_view_impl_for_testing.cc
+++ b/content/test/web_layer_tree_view_impl_for_testing.cc
@@ -47,6 +47,7 @@ void WebLayerTreeViewImplForTesting::Initialize() {
   params.client = this;
   params.settings = &settings;
   params.main_task_runner = base::ThreadTaskRunnerHandle::Get();
+  params.task_graph_runner = &task_graph_runner_;
   layer_tree_host_ = cc::LayerTreeHost::CreateSingleThreaded(this, &params);
   DCHECK(layer_tree_host_);
 }