Move MaxScrollOffset to property_trees

cc/test/layer_tree_host_common_test.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/test/layer_tree_host_common_test.h"
 
 #include <stddef.h>
 
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 84 matching lines @@
 
 void LayerTreeHostCommonTestBase::
     ExecuteCalculateDrawPropertiesWithPropertyTrees(Layer* root_layer) {
   DCHECK(root_layer->layer_tree_host());
   LayerTreeHostCommon::PreCalculateMetaInformation(root_layer);
 
   gfx::Transform identity_transform;
 
   bool can_render_to_separate_surface = true;
 
-  Layer* page_scale_layer = nullptr;
+  const Layer* page_scale_layer =
+      root_layer->layer_tree_host()->page_scale_layer();
   Layer* inner_viewport_scroll_layer =
       root_layer->layer_tree_host()->inner_viewport_scroll_layer();
   Layer* outer_viewport_scroll_layer =
       root_layer->layer_tree_host()->outer_viewport_scroll_layer();
   const Layer* overscroll_elasticity_layer =
       root_layer->layer_tree_host()->overscroll_elasticity_layer();
   gfx::Vector2dF elastic_overscroll =
       root_layer->layer_tree_host()->elastic_overscroll();
   float page_scale_factor = 1.f;
   float device_scale_factor = 1.f;
@@ skipping 120 matching lines @@
 
 LayerTreeHostCommonTest::LayerTreeHostCommonTest()
     : LayerTreeHostCommonTestBase(LayerTreeSettingsForCommonTest()) {}
 
 LayerTreeHostCommonTest::LayerTreeHostCommonTest(
     const LayerTreeSettings& settings)
     : LayerTreeHostCommonTestBase(settings) {
 }
 
 }  // namespace cc