Style Change: NULL->nullptr

tests/RecordingXfermodeTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 
 #include "../include/core/SkCanvas.h"
@@ skipping 32 matching lines @@
         whitePaint.setColor(0xffffffff);
         SkPaint layerPaint;
         layerPaint.setColor(0xff000000);
         layerPaint.setXfermodeMode(mode);
         SkRect canvasRect(SkRect::MakeWH(SkIntToScalar(fImageInfo.width()),
                                          SkIntToScalar(fImageInfo.height())));
 
         canvas->clipRect(clipRect);
         canvas->clear(0xff000000);
 
-        canvas->saveLayer(NULL, &blackPaint);
+        canvas->saveLayer(nullptr, &blackPaint);
             canvas->drawRect(canvasRect, greenPaint);
-            canvas->saveLayer(NULL, &layerPaint);
+            canvas->saveLayer(nullptr, &layerPaint);
                 canvas->drawBitmapRect(fCircleBM, SkRect::MakeXYWH(20,20,60,60), &blackPaint);
             canvas->restore();
         canvas->restore();
     }
 
  private:
     const SkImageInfo fImageInfo;
     SkBitmap fCircleBM;
 };
 
@@ skipping 98 matching lines @@
             errors.appendf("For SkXfermode %d %s:    SkPictureRecorder bitmap is wrong\n",
                            iMode, SkXfermode::ModeName(mode));
         }
 #endif
     }
 
 #if !FINEGRAIN
     REPORTER_ASSERT_MESSAGE(reporter, 0 == numErrors, errors.c_str());
 #endif
 }