[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr [part-…

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 <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "cc/base/math_util.h"
@@ skipping 936 matching lines @@
   Layer* mask_layer = layer->mask_layer();
   if (mask_layer) {
     mask_layer->CalculateContentsScale(
         contents_scale,
         &mask_layer->draw_properties().contents_scale_x,
         &mask_layer->draw_properties().contents_scale_y,
         &mask_layer->draw_properties().content_bounds);
   }
 
   Layer* replica_mask_layer =
-      layer->replica_layer() ? layer->replica_layer()->mask_layer() : NULL;
+      layer->replica_layer() ? layer->replica_layer()->mask_layer() : nullptr;
   if (replica_mask_layer) {
     replica_mask_layer->CalculateContentsScale(
         contents_scale,
         &replica_mask_layer->draw_properties().contents_scale_x,
         &replica_mask_layer->draw_properties().contents_scale_y,
         &replica_mask_layer->draw_properties().content_bounds);
   }
 }
 
 static inline void UpdateLayerContentsScale(
@@ skipping 780 matching lines @@
         mask_layer,
         ideal_contents_scale,
         combined_maximum_animation_contents_scale,
         data_from_ancestor.in_subtree_of_page_scale_application_layer
             ? globals.page_scale_factor
             : 1.f,
         globals.device_scale_factor);
   }
 
   LayerType* replica_mask_layer =
-      layer->replica_layer() ? layer->replica_layer()->mask_layer() : NULL;
+      layer->replica_layer() ? layer->replica_layer()->mask_layer() : nullptr;
   if (replica_mask_layer) {
     UpdateLayerScaleDrawProperties(
         replica_mask_layer,
         ideal_contents_scale,
         combined_maximum_animation_contents_scale,
         data_from_ancestor.in_subtree_of_page_scale_application_layer
             ? globals.page_scale_factor
             : 1.f,
         globals.device_scale_factor);
   }
@@ skipping 585 matching lines @@
       MathUtil::ComputeTransform2dScaleComponents(inputs.device_transform, 1.f);
   // Not handling the rare case of different x and y device scale.
   float device_transform_scale =
       std::max(device_transform_scale_components.x(),
                device_transform_scale_components.y());
 
   gfx::Transform scaled_device_transform = inputs.device_transform;
   scaled_device_transform.Scale(inputs.device_scale_factor,
                                 inputs.device_scale_factor);
 
-  globals->layer_sorter = NULL;
+  globals->layer_sorter = nullptr;
   globals->max_texture_size = inputs.max_texture_size;
   globals->device_scale_factor =
       inputs.device_scale_factor * device_transform_scale;
   globals->page_scale_factor = inputs.page_scale_factor;
   globals->page_scale_application_layer = inputs.page_scale_application_layer;
   globals->can_render_to_separate_surface =
       inputs.can_render_to_separate_surface;
   globals->can_adjust_raster_scales = inputs.can_adjust_raster_scales;
 
   data_for_recursion->parent_matrix = scaled_device_transform;
   data_for_recursion->full_hierarchy_matrix = identity_matrix;
   data_for_recursion->scroll_compensation_matrix = identity_matrix;
   data_for_recursion->fixed_container = inputs.root_layer;
   data_for_recursion->clip_rect_in_target_space = device_viewport_rect;
   data_for_recursion->clip_rect_of_target_surface_in_target_space =
       device_viewport_rect;
   data_for_recursion->maximum_animation_contents_scale = 0.f;
   data_for_recursion->ancestor_is_animating_scale = false;
   data_for_recursion->ancestor_clips_subtree = true;
-  data_for_recursion->nearest_occlusion_immune_ancestor_surface = NULL;
+  data_for_recursion->nearest_occlusion_immune_ancestor_surface = nullptr;
   data_for_recursion->in_subtree_of_page_scale_application_layer = false;
   data_for_recursion->subtree_can_use_lcd_text = inputs.can_use_lcd_text;
   data_for_recursion->subtree_is_visible_from_ancestor = true;
 }
 
 void LayerTreeHostCommon::CalculateDrawProperties(
     CalcDrawPropsMainInputs* inputs) {
   LayerList dummy_layer_list;
   SubtreeGlobals<Layer> globals;
   DataForRecursion<Layer> data_for_recursion;
@@ skipping 42 matching lines @@
       inputs->current_render_surface_layer_list_id);
 
   // The dummy layer list should not have been used.
   DCHECK_EQ(0u, dummy_layer_list.size());
   // A root layer render_surface should always exist after
   // CalculateDrawProperties.
   DCHECK(inputs->root_layer->render_surface());
 }
 
 }  // namespace cc