Style Change: NULL->nullptr

src/views/unix/skia_unix.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 "SkApplication.h"
 #include "SkEvent.h"
 #include "SkWindow.h"
 
 int main(int argc, char** argv){
-    SkOSWindow* window = create_sk_window(NULL, argc, argv);
+    SkOSWindow* window = create_sk_window(nullptr, argc, argv);
 
     // drain any events that occurred before |window| was assigned.
     while (SkEvent::ProcessEvent());
 
     // Start normal Skia sequence
     application_init();
 
     window->loop();
 
     delete window;
     application_term();
     return 0;
 }