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

cc/trees/layer_tree_host_common.h

 // 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.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_COMMON_H_
 #define CC_TREES_LAYER_TREE_HOST_COMMON_H_
 
 #include <limits>
 #include <vector>
 
@@ skipping 147 matching lines @@
   //
   // Otherwise, the layer just contributes itself to the target surface.
 
   return layer->render_surface() && layer->id() != target_surface_layer_id;
 }
 
 template <typename LayerType>
 LayerType* LayerTreeHostCommon::FindLayerInSubtree(LayerType* root_layer,
                                                    int layer_id) {
   if (!root_layer)
-    return NULL;
+    return nullptr;
 
   if (root_layer->id() == layer_id)
     return root_layer;
 
   if (root_layer->mask_layer() && root_layer->mask_layer()->id() == layer_id)
     return root_layer->mask_layer();
 
   if (root_layer->replica_layer() &&
       root_layer->replica_layer()->id() == layer_id)
     return root_layer->replica_layer();
 
   for (size_t i = 0; i < root_layer->children().size(); ++i) {
     if (LayerType* found = FindLayerInSubtree(
             get_layer_as_raw_ptr(root_layer->children(), i), layer_id))
       return found;
   }
-  return NULL;
+  return nullptr;
 }
 
 template <typename LayerType>
 void LayerTreeHostCommon::CallFunctionForSubtree(
     LayerType* root_layer,
     const base::Callback<void(LayerType* layer)>& function) {
   function.Run(root_layer);
 
   if (LayerType* mask_layer = root_layer->mask_layer())
     function.Run(mask_layer);
@@ skipping 16 matching lines @@
         LayerType* root_layer,
         const gfx::Size& device_viewport_size,
         const gfx::Transform& device_transform,
         RenderSurfaceLayerListType* render_surface_layer_list)
     : CalcDrawPropsInputs<LayerType, RenderSurfaceLayerListType>(
           root_layer,
           device_viewport_size,
           device_transform,
           1.f,
           1.f,
-          NULL,
+          nullptr,
           std::numeric_limits<int>::max() / 2,
           false,
           true,
           false,
           render_surface_layer_list,
           0) {
   DCHECK(root_layer);
   DCHECK(render_surface_layer_list);
 }
 
 template <typename LayerType, typename RenderSurfaceLayerListType>
 LayerTreeHostCommon::CalcDrawPropsInputsForTesting<LayerType,
                                                    RenderSurfaceLayerListType>::
     CalcDrawPropsInputsForTesting(
         LayerType* root_layer,
         const gfx::Size& device_viewport_size,
         RenderSurfaceLayerListType* render_surface_layer_list)
     : CalcDrawPropsInputs<LayerType, RenderSurfaceLayerListType>(
           root_layer,
           device_viewport_size,
           identity_transform_,
           1.f,
           1.f,
-          NULL,
+          nullptr,
           std::numeric_limits<int>::max() / 2,
           false,
           true,
           false,
           render_surface_layer_list,
           0) {
   DCHECK(root_layer);
   DCHECK(render_surface_layer_list);
 }
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_COMMON_H_