replace NULL->nullptr in src/remoting.

remoting/host/desktop_resizer_mac.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/host/desktop_resizer.h"
 
 #include <Carbon/Carbon.h>
 
 #include "base/basictypes.h"
 #include "base/mac/foundation_util.h"
@@ skipping 57 matching lines @@
   if (base::mac::IsOSSnowLeopard() || !GetSoleDisplayId(&display)) {
     return;
   }
 
   base::ScopedCFTypeRef<CFMutableArrayRef> modes;
   std::list<ScreenResolution> resolutions;
   GetSupportedModesAndResolutions(&modes, &resolutions);
   // There may be many modes with the requested resolution. Pick the one with
   // the highest color depth.
   int index = 0, best_depth = 0;
-  CGDisplayModeRef best_mode = NULL;
+  CGDisplayModeRef best_mode = nullptr;
   for (std::list<ScreenResolution>::const_iterator i = resolutions.begin();
        i != resolutions.end(); ++i, ++index) {
     if (i->Equals(resolution)) {
       CGDisplayModeRef mode = const_cast<CGDisplayModeRef>(
           static_cast<const CGDisplayMode*>(
               CFArrayGetValueAtIndex(modes, index)));
       int depth = 0;
       base::ScopedCFTypeRef<CFStringRef> encoding(
           CGDisplayModeCopyPixelEncoding(mode));
       if (CFStringCompare(encoding, CFSTR(IO32BitDirectPixels),
@@ skipping 13 matching lines @@
         best_mode = mode;
       }
     }
   }
   if (best_mode) {
     HOST_LOG << "Changing mode to " << best_mode << " ("
               << resolution.dimensions().width() << "x"
               << "x" << resolution.dimensions().height() << "x"
               << best_depth << " @ "
               << resolution.dpi().x() << "x" << resolution.dpi().y() << " dpi)";
-    CGDisplaySetDisplayMode(display, best_mode, NULL);
+    CGDisplaySetDisplayMode(display, best_mode, nullptr);
   }
 }
 
 void DesktopResizerMac::RestoreResolution(const ScreenResolution& original) {
   SetResolution(original);
 }
 
 void DesktopResizerMac::GetSupportedModesAndResolutions(
     base::ScopedCFTypeRef<CFMutableArrayRef>* modes,
     std::list<ScreenResolution>* resolutions) {
   CGDirectDisplayID display;
   if (!GetSoleDisplayId(&display)) {
     return;
   }
 
   base::ScopedCFTypeRef<CFArrayRef> all_modes(
-      CGDisplayCopyAllDisplayModes(display, NULL));
+      CGDisplayCopyAllDisplayModes(display, nullptr));
   if (!all_modes) {
     return;
   }
 
-  modes->reset(CFArrayCreateMutableCopy(NULL, 0, all_modes));
+  modes->reset(CFArrayCreateMutableCopy(nullptr, 0, all_modes));
   CFIndex count = CFArrayGetCount(*modes);
   for (CFIndex i = 0; i < count; ++i) {
     CGDisplayModeRef mode = const_cast<CGDisplayModeRef>(
         static_cast<const CGDisplayMode*>(
             CFArrayGetValueAtIndex(*modes, i)));
     if (CGDisplayModeIsUsableForDesktopGUI(mode)) {
       // TODO(jamiewalch): Get the correct DPI: http://crbug.com/172405.
       ScreenResolution resolution(
           webrtc::DesktopSize(CGDisplayModeGetWidth(mode),
                               CGDisplayModeGetHeight(mode)),
@@ skipping 19 matching lines @@
   }
   *display = displays[0];
   return true;
 }
 
 scoped_ptr<DesktopResizer> DesktopResizer::Create() {
   return make_scoped_ptr(new DesktopResizerMac);
 }
 
 }  // namespace remoting