Style Change: NULL->nullptr

src/doc/SkDocument_PDF.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDocument.h"
 #include "SkPDFCanon.h"
 #include "SkPDFDevice.h"
@@ skipping 300 matching lines @@
         fCanvas.reset(new SkCanvas(device.get()));
         fPageDevices.push(device.detach());
         fCanvas->clipRect(trimBox);
         fCanvas->translate(trimBox.x(), trimBox.y());
         return fCanvas.get();
     }
 
     void onEndPage() override {
         SkASSERT(fCanvas.get());
         fCanvas->flush();
-        fCanvas.reset(NULL);
+        fCanvas.reset(nullptr);
     }
 
     bool onClose(SkWStream* stream) override {
         SkASSERT(!fCanvas.get());
 
         bool success = emit_pdf_document(fPageDevices, stream);
         fPageDevices.unrefAll();
         fCanon.reset();
         return success;
     }
 
     void onAbort() override {
         fPageDevices.unrefAll();
         fCanon.reset();
     }
 
 private:
     SkPDFCanon fCanon;
     SkTDArray<const SkPDFDevice*> fPageDevices;
     SkAutoTUnref<SkCanvas> fCanvas;
     SkScalar fRasterDpi;
 };
 }  // namespace
 ///////////////////////////////////////////////////////////////////////////////
 
 SkDocument* SkDocument::CreatePDF(SkWStream* stream, SkScalar dpi) {
-    return stream ? new SkDocument_PDF(stream, NULL, dpi) : NULL;
+    return stream ? new SkDocument_PDF(stream, nullptr, dpi) : nullptr;
 }
 
 SkDocument* SkDocument::CreatePDF(const char path[], SkScalar dpi) {
     SkFILEWStream* stream = new SkFILEWStream(path);
     if (!stream->isValid()) {
         delete stream;
-        return NULL;
+        return nullptr;
     }
     auto delete_wstream = [](SkWStream* stream, bool) { delete stream; };
     return new SkDocument_PDF(stream, delete_wstream, dpi);
 }