cc/blimp: Set up the framework for state serialization.

cc/layers/layer_proto_converter_unittest.cc

Index: cc/layers/layer_proto_converter_unittest.cc
diff --git a/cc/layers/layer_proto_converter_unittest.cc b/cc/layers/layer_proto_converter_unittest.cc
index e6153a7f946c94e056608a0cc3aed58e53ab465d..04ac5da21cc0e38cc355014bf621e4852cc02e70 100644
--- a/cc/layers/layer_proto_converter_unittest.cc
+++ b/cc/layers/layer_proto_converter_unittest.cc
@@ -316,7 +316,7 @@ TEST_F(LayerProtoConverterTest, PictureLayerTypeSerialization) {
       PictureLayer::Create(EmptyContentLayerClient::GetInstance());
 
   proto::LayerNode layer_hierarchy;
-  LayerProtoConverter::SerializeLayerHierarchy(layer.get(), &layer_hierarchy);
+  layer->ToLayerNodeProto(&layer_hierarchy);
   EXPECT_EQ(proto::LayerNode::PICTURE_LAYER, layer_hierarchy.type());
 }
 
@@ -351,7 +351,7 @@ TEST_F(LayerProtoConverterTest, HudLayerTypeSerialization) {
   scoped_refptr<HeadsUpDisplayLayer> layer = HeadsUpDisplayLayer::Create();
 
   proto::LayerNode layer_hierarchy;
-  LayerProtoConverter::SerializeLayerHierarchy(layer.get(), &layer_hierarchy);
+  layer->ToLayerNodeProto(&layer_hierarchy);
   EXPECT_EQ(proto::LayerNode::HEADS_UP_DISPLAY_LAYER, layer_hierarchy.type());
 }