Run clang-modernize -use-nullptr over src/extensions/.

extensions/browser/api/cast_channel/cast_channel_api.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 "extensions/browser/api/cast_channel/cast_channel_api.h"
 
 #include <limits>
 #include <string>
 
 #include "base/json/json_writer.h"
@@ skipping 167 matching lines @@
   VLOG(1) << "Sending message " << ParamToString(message_info)
           << " to channel " << ParamToString(channel_info);
   scoped_ptr<Event> event(new Event(OnMessage::kEventName, results.Pass()));
   extensions::EventRouter::Get(browser_context_)
       ->DispatchEventToExtension(socket->owner_extension_id(), event.Pass());
 }
 
 CastChannelAPI::~CastChannelAPI() {}
 
 CastChannelAsyncApiFunction::CastChannelAsyncApiFunction()
-  : manager_(NULL), error_(cast_channel::CHANNEL_ERROR_NONE) { }
+    : manager_(nullptr), error_(cast_channel::CHANNEL_ERROR_NONE) {
+}
 
 CastChannelAsyncApiFunction::~CastChannelAsyncApiFunction() { }
 
 bool CastChannelAsyncApiFunction::PrePrepare() {
   manager_ = ApiResourceManager<CastSocket>::Get(browser_context());
   return true;
 }
 
 bool CastChannelAsyncApiFunction::Respond() {
   return error_ == cast_channel::CHANNEL_ERROR_NONE;
@@ skipping 267 matching lines @@
   VLOG(1) << "CastChannelCloseFunction::OnClose result = " << result;
   int channel_id = params_->channel.channel_id;
   CastSocket* socket = GetSocket(channel_id);
   if (result < 0 || !socket) {
     SetResultFromError(channel_id,
                        cast_channel::CHANNEL_ERROR_SOCKET_ERROR);
   } else {
     SetResultFromSocket(*socket);
     // This will delete |socket|.
     RemoveSocket(channel_id);
-    socket = NULL;
+    socket = nullptr;
   }
   AsyncWorkCompleted();
 }
 
 CastChannelGetLogsFunction::CastChannelGetLogsFunction() {
 }
 
 CastChannelGetLogsFunction::~CastChannelGetLogsFunction() {
 }
 
@@ skipping 16 matching lines @@
   } else {
     SetError("Unable to get logs.");
   }
 
   api_->GetLogger()->Reset();
 
   AsyncWorkCompleted();
 }
 
 }  // namespace extensions