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

cc/trees/occlusion_tracker_unittest.cc

 // 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.
 
 #include "cc/trees/occlusion_tracker.h"
 
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/base/math_util.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 106 matching lines @@
   typedef OcclusionTracker<Layer> OcclusionTrackerType;
 
   static LayerPtrType CreateLayer(HostType*  host) { return Layer::Create(); }
   static ContentLayerPtrType CreateContentLayer(HostType* host) {
     return make_scoped_refptr(new ContentLayerType());
   }
 
   template <typename T>
   static LayerPtrType PassLayerPtr(T* layer) {
     LayerPtrType ref(*layer);
-    *layer = NULL;
+    *layer = nullptr;
     return ref;
   }
 
-  static void DestroyLayer(LayerPtrType* layer) { *layer = NULL; }
+  static void DestroyLayer(LayerPtrType* layer) { *layer = nullptr; }
 
   static void RecursiveUpdateNumChildren(LayerType* layerType) {}
 };
 
 struct OcclusionTrackerTestImplThreadTypes {
   typedef LayerImpl LayerType;
   typedef LayerTreeImpl HostType;
   typedef RenderSurfaceImpl RenderSurfaceType;
   typedef TestContentLayerImpl ContentLayerType;
   typedef scoped_ptr<LayerImpl> LayerPtrType;
@@ skipping 3159 matching lines @@
     EXPECT_EQ(gfx::Rect(),
               occlusion.UnoccludedSurfaceContentRect(
                   surface, gfx::Rect(80, 70, 50, 50)));
   }
 };
 
 ALL_OCCLUSIONTRACKER_TEST(OcclusionTrackerTestUnoccludedSurfaceQuery)
 
 }  // namespace
 }  // namespace cc