Refactor MutatorHostClient from LayerTreeHost to LayerTree.

cc/trees/layer_tree_host_common.cc

 // Copyright 2011 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/layer_tree_host_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 636 matching lines @@
   PropertyTreeBuilder::BuildPropertyTrees(
       inputs->root_layer, inputs->page_scale_layer,
       inputs->inner_viewport_scroll_layer, inputs->outer_viewport_scroll_layer,
       overscroll_elasticity_layer, elastic_overscroll,
       inputs->page_scale_factor, inputs->device_scale_factor,
       gfx::Rect(inputs->device_viewport_size), inputs->device_transform,
       property_trees);
   draw_property_utils::UpdatePropertyTrees(property_trees,
                                            can_render_to_separate_surface);
   draw_property_utils::FindLayersThatNeedUpdates(
-      inputs->root_layer->layer_tree_host(), property_trees->transform_tree,
+      inputs->root_layer->GetLayerTree(), property_trees->transform_tree,
       property_trees->effect_tree, &update_layer_list);
 }
 
 void LayerTreeHostCommon::CalculateDrawProperties(
     CalcDrawPropsImplInputs* inputs) {
   CalculateDrawPropertiesInternal(inputs, DONT_BUILD_PROPERTY_TREES);
 
   if (CdpPerfTracingEnabled()) {
     LayerTreeImpl* layer_tree_impl = inputs->root_layer->layer_tree_impl();
     if (layer_tree_impl->IsPendingTree() &&
@@ skipping 48 matching lines @@
 
 PropertyTrees* GetPropertyTrees(Layer* layer) {
   return layer->layer_tree_host()->property_trees();
 }
 
 PropertyTrees* GetPropertyTrees(LayerImpl* layer) {
   return layer->layer_tree_impl()->property_trees();
 }
 
 }  // namespace cc