Style Change: NULL->nullptr

gm/imagefilters.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkImageFilter.h"
 #include "SkColorMatrixFilter.h"
@@ skipping 13 matching lines @@
 
     SkISize onISize() override { return SkISize::Make(480, 480); }
 
     void doDraw(SkCanvas* canvas, SkXfermode::Mode mode, SkImageFilter* imf) {
         SkAutoCanvasRestore acr(canvas, true);
         canvas->clipRect(SkRect::MakeWH(220, 220));
         
         // want to force a layer, so modes like DstIn can combine meaningfully, but the final
         // image can still be shown against our default (opaque) background. non-opaque GMs
         // are a lot more trouble to compare/triage.
-        canvas->saveLayer(NULL, NULL);
+        canvas->saveLayer(nullptr, nullptr);
         canvas->drawColor(SK_ColorGREEN);
 
         SkPaint paint;
         paint.setAntiAlias(true);
         
         SkRect r0 = SkRect::MakeXYWH(10, 60, 200, 100);
         SkRect r1 = SkRect::MakeXYWH(60, 10, 100, 200);
         
         paint.setColor(SK_ColorRED);
         canvas->drawOval(r0, paint);
@@ skipping 10 matching lines @@
         // just need an imagefilter to trigger the code-path (which creates a tmp layer)
         SkAutoTUnref<SkImageFilter> imf(SkImageFilter::CreateMatrixFilter(SkMatrix::I(),
                                                                           kNone_SkFilterQuality));
 
         const SkXfermode::Mode modes[] = {
             SkXfermode::kSrcATop_Mode, SkXfermode::kDstIn_Mode
         };
         
         for (size_t i = 0; i < SK_ARRAY_COUNT(modes); ++i) {
             canvas->save();
-            this->doDraw(canvas, modes[i], NULL);
+            this->doDraw(canvas, modes[i], nullptr);
             canvas->translate(240, 0);
             this->doDraw(canvas, modes[i], imf);
             canvas->restore();
             
             canvas->translate(0, 240);
         }
     }
 
 private:
     typedef GM INHERITED;
 };
 DEF_GM( return new ImageFilterXfermodeTestGM; )