Mojo: NULL -> nullptr in mojo/system and mojo/embedder.

mojo/embedder/channel_init.cc

 // Copyright 2014 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 "mojo/embedder/channel_init.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/embedder/embedder.h"
 
 namespace mojo {
 namespace embedder {
 
-ChannelInit::ChannelInit() : channel_info_(NULL), weak_factory_(this) {
+ChannelInit::ChannelInit() : channel_info_(nullptr), weak_factory_(this) {
 }
 
 ChannelInit::~ChannelInit() {
   if (channel_info_)
     DestroyChannel(channel_info_);
 }
 
 ScopedMessagePipeHandle ChannelInit::Init(
     base::PlatformFile file,
     scoped_refptr<base::TaskRunner> io_thread_task_runner) {
@@ skipping 22 matching lines @@
   if (!self) {
     DestroyChannel(channel);
     return;
   }
 
   self->channel_info_ = channel;
 }
 
 }  // namespace embedder
 }  // namespace mojo