cc: Move data to LayerTree from LayerTreeHost.

cc/trees/layer_tree_host_common.cc

Index: cc/trees/layer_tree_host_common.cc
diff --git a/cc/trees/layer_tree_host_common.cc b/cc/trees/layer_tree_host_common.cc
index 7024f3a0717c419dc43f318f11e4dd64d51a6f0c..02557e3a2e1b3e7132d60cc7798845da37d4e05e 100644
--- a/cc/trees/layer_tree_host_common.cc
+++ b/cc/trees/layer_tree_host_common.cc
@@ -617,7 +617,7 @@ void LayerTreeHostCommon::CalculateDrawPropertiesForTesting(
   LayerList update_layer_list;
   bool can_render_to_separate_surface = true;
   PropertyTrees* property_trees =
-      inputs->root_layer->layer_tree_host()->property_trees();
+      inputs->root_layer->GetLayerTree()->property_trees();
   Layer* overscroll_elasticity_layer = nullptr;
   gfx::Vector2dF elastic_overscroll;
   PropertyTreeBuilder::BuildPropertyTrees(
@@ -691,7 +691,7 @@ void LayerTreeHostCommon::CalculateDrawPropertiesForTesting(
 }
 
 PropertyTrees* GetPropertyTrees(Layer* layer) {
-  return layer->layer_tree_host()->property_trees();
+  return layer->GetLayerTree()->property_trees();
 }
 
 PropertyTrees* GetPropertyTrees(LayerImpl* layer) {