cc: Move data to LayerTree from LayerTreeHost.

cc/trees/tree_synchronizer.cc

Index: cc/trees/tree_synchronizer.cc
diff --git a/cc/trees/tree_synchronizer.cc b/cc/trees/tree_synchronizer.cc
index 6314afbae0ab754c5d26f1a837ff9eb789c6935e..0969de18ac2e7c2371e3d7485c70183d2f42134a 100644
--- a/cc/trees/tree_synchronizer.cc
+++ b/cc/trees/tree_synchronizer.cc
@@ -47,7 +47,7 @@ void TreeSynchronizer::SynchronizeTrees(Layer* layer_root,
     tree_impl->DetachLayers();
   } else {
     SynchronizeTreesInternal(layer_root->layer_tree_host(), tree_impl,
-                             layer_root->layer_tree_host()->property_trees());
+                             layer_root->GetLayerTree()->property_trees());
   }
 }