Enable more layer_tree_host_unittest for LayerTreeHostRemote.

cc/blimp/layer_factory.h

Index: cc/blimp/layer_factory.h
diff --git a/cc/blimp/layer_factory.h b/cc/blimp/layer_factory.h
index 6d5bbf146545978deba562b3fafb78aba4fce45b..0c0c88cdeb6203aca43cd464b0184f03a0b0b652 100644
--- a/cc/blimp/layer_factory.h
+++ b/cc/blimp/layer_factory.h
@@ -27,10 +27,6 @@ class LayerFactory {
       int engine_layer_id,
       ContentLayerClient* content_layer_client) = 0;
 
-  virtual scoped_refptr<PictureLayer> CreateFakePictureLayer(
-      int engine_layer_id,
-      ContentLayerClient* content_layer_client) = 0;
-
   virtual scoped_refptr<SolidColorScrollbarLayer>
   CreateSolidColorScrollbarLayer(int engine_layer_id,
                                  ScrollbarOrientation orientation,
@@ -38,6 +34,14 @@ class LayerFactory {
                                  int track_start,
                                  bool is_left_side_vertical_scrollbar,
                                  int scroll_layer_id) = 0;
+
+  // Create layers for testing.
+  virtual scoped_refptr<PictureLayer> CreateFakePictureLayer(
+      int engine_layer_id,
+      ContentLayerClient* content_layer_client) = 0;
+
+  virtual scoped_refptr<Layer> CreatePushPropertiesCountingLayer(
+      int engine_layer_id) = 0;
 };
 
 }  // namespace cc