cc/blimp: Remove the LayerTreeSettings serialization.

cc/test/layer_tree_test.cc

Index: cc/test/layer_tree_test.cc
diff --git a/cc/test/layer_tree_test.cc b/cc/test/layer_tree_test.cc
index 6bd79e5615247fe68e7d235710cbe98ad870e630..59b68e01d9254241cf0a1feb2de7150160b0ee61 100644
--- a/cc/test/layer_tree_test.cc
+++ b/cc/test/layer_tree_test.cc
@@ -904,9 +904,7 @@ void LayerTreeTest::CreateRemoteClientHost(
   DCHECK(proto.message_type() ==
          proto::CompositorMessageToImpl::INITIALIZE_IMPL);
 
-  proto::InitializeImpl initialize_proto = proto.initialize_impl_message();
-  LayerTreeSettings settings;
-  settings.FromProtobuf(initialize_proto.layer_tree_settings());
+  LayerTreeSettings settings = settings_;
   settings.abort_commit_before_output_surface_creation = false;
   remote_client_layer_tree_host_ = LayerTreeHostForTesting::Create(
       this, mode_, client_.get(), &remote_proto_channel_bridge_.channel_impl,