Refactor MutatorHostClient from LayerTreeHost to LayerTree.

cc/trees/draw_property_utils.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/draw_property_utils.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 688 matching lines @@
 }
 
 bool LayerShouldBeSkipped(Layer* layer,
                           bool layer_is_drawn,
                           const TransformTree& transform_tree,
                           const EffectTree& effect_tree) {
   return LayerShouldBeSkippedInternal(layer, layer_is_drawn, transform_tree,
                                       effect_tree);
 }
 
-void FindLayersThatNeedUpdates(LayerTreeHost* layer_tree_host,
+void FindLayersThatNeedUpdates(LayerTree* layer_tree,
                                const TransformTree& transform_tree,
                                const EffectTree& effect_tree,
                                LayerList* update_layer_list) {
-  for (auto* layer : *layer_tree_host) {
+  for (auto* layer : *layer_tree) {
     bool layer_is_drawn =
         effect_tree.Node(layer->effect_tree_index())->is_drawn;
 
     if (!IsRootLayer(layer) &&
         LayerShouldBeSkipped(layer, layer_is_drawn, transform_tree,
                              effect_tree))
       continue;
 
     if (LayerNeedsUpdate(layer, layer_is_drawn, transform_tree)) {
       update_layer_list->push_back(layer);
@@ skipping 872 matching lines @@
 void UpdateElasticOverscroll(PropertyTrees* property_trees,
                              const Layer* overscroll_elasticity_layer,
                              const gfx::Vector2dF& elastic_overscroll) {
   UpdateElasticOverscrollInternal(property_trees, overscroll_elasticity_layer,
                                   elastic_overscroll);
 }
 
 }  // namespace draw_property_utils
 
 }  // namespace cc