Style Change: NULL->nullptr

samplecode/SampleStringArt.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SampleCode.h"
 #include "SkCanvas.h"
 #include "SkPath.h"
@@ skipping 41 matching lines @@
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setStyle(SkPaint::kStroke_Style);
         paint.setColor(0xFF007700);
 
         canvas->drawPath(path, paint);
     }
 
     SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override {
         fAngle = x/width();
-        this->inval(NULL);
-        return NULL;
+        this->inval(nullptr);
+        return nullptr;
     }
 private:
 
     SkScalar fAngle;
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new StringArtView; }
 static SkViewRegister reg(MyFactory);