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

cc/layers/layer_iterator.h

 // Copyright 2012 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_LAYERS_LAYER_ITERATOR_H_
 #define CC_LAYERS_LAYER_ITERATOR_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/trees/layer_tree_host_common.h"
 
@@ skipping 90 matching lines @@
 // An iterator class for walking over layers in the
 // RenderSurface-Layer tree.
 template <typename LayerType>
 class LayerIterator {
   typedef LayerIterator<LayerType> LayerIteratorType;
   typedef typename LayerType::LayerListType LayerList;
   typedef typename LayerType::RenderSurfaceListType RenderSurfaceLayerList;
   typedef typename LayerType::RenderSurfaceType RenderSurfaceType;
 
  public:
-  LayerIterator() : render_surface_layer_list_(NULL) {}
+  LayerIterator() : render_surface_layer_list_(nullptr) {}
 
   static LayerIteratorType Begin(
       const RenderSurfaceLayerList* render_surface_layer_list) {
     return LayerIteratorType(render_surface_layer_list, true);
   }
   static LayerIteratorType End(
       const RenderSurfaceLayerList* render_surface_layer_list) {
     return LayerIteratorType(render_surface_layer_list, false);
   }
 
@@ skipping 165 matching lines @@
   // this is a value from 0 to n-1 (n = number of children).
   // Since the iterator must also stop at the layers representing
   // the target surface, this is done by setting the current_layerIndex
   // to a value of LayerIteratorValue::LayerRepresentingTargetRenderSurface.
   int current_layer_index_;
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_ITERATOR_H_