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

cc/output/render_surface_filters.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/output/render_surface_filters.h"
 
 #include <algorithm>
 
 #include "cc/output/filter_operation.h"
 #include "cc/output/filter_operations.h"
@@ skipping 224 matching lines @@
         GetSaturatingBrightnessMatrix(op.amount(), matrix);
         image_filter = CreateMatrixImageFilter(matrix, image_filter);
         break;
       case FilterOperation::REFERENCE: {
         if (!op.image_filter())
           break;
 
         skia::RefPtr<SkColorFilter> cf;
 
         {
-          SkColorFilter* colorfilter_rawptr = NULL;
+          SkColorFilter* colorfilter_rawptr = nullptr;
           op.image_filter()->asColorFilter(&colorfilter_rawptr);
           cf = skia::AdoptRef(colorfilter_rawptr);
         }
 
         if (cf && cf->asColorMatrix(matrix) &&
             !op.image_filter()->getInput(0)) {
           image_filter = CreateMatrixImageFilter(matrix, image_filter);
         } else if (image_filter) {
           image_filter = skia::AdoptRef(SkComposeImageFilter::Create(
               op.image_filter().get(), image_filter.get()));
@@ skipping 13 matching lines @@
           image_filter = alpha_filter;
         }
         break;
       }
     }
   }
   return image_filter;
 }
 
 }  // namespace cc