cc: Get rid of non-delegated rendering in most cc unit tests.

cc/blink/web_layer_impl_fixed_bounds_unittest.cc

Index: cc/blink/web_layer_impl_fixed_bounds_unittest.cc
diff --git a/cc/blink/web_layer_impl_fixed_bounds_unittest.cc b/cc/blink/web_layer_impl_fixed_bounds_unittest.cc
index 1fa6b8dd268470fbf170de006640497226b50eb4..1074c8a67aefafd48f0245b0a6c2ea2f2d0ead2d 100644
--- a/cc/blink/web_layer_impl_fixed_bounds_unittest.cc
+++ b/cc/blink/web_layer_impl_fixed_bounds_unittest.cc
@@ -105,7 +105,7 @@ void CompareFixedBoundsLayerAndNormalLayer(const WebFloatPoint& anchor_point,
   normal_layer->setPosition(position);
   root_layer->addChild(normal_layer);
 
-  cc::FakeLayerTreeHostClient client(cc::FakeLayerTreeHostClient::DIRECT_3D);
+  cc::FakeLayerTreeHostClient client;
   cc::TestTaskGraphRunner task_graph_runner;
   std::unique_ptr<cc::FakeLayerTreeHost> host =
       cc::FakeLayerTreeHost::Create(&client, &task_graph_runner);