Oilpan: move BaseChooserOnlyDateAndTimeInputType to the heap.

third_party/WebKit/Source/web/DateTimeChooserImpl.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 52 matching lines @@
     return adoptRefWillBeNoop(new DateTimeChooserImpl(chromeClient, client, parameters));
 }
 
 DateTimeChooserImpl::~DateTimeChooserImpl()
 {
 }
 
 DEFINE_TRACE(DateTimeChooserImpl)
 {
     visitor->trace(m_chromeClient);
+    visitor->trace(m_client);
     DateTimeChooser::trace(visitor);
 }
 
 void DateTimeChooserImpl::endChooser()
 {
     if (!m_popup)
         return;
     m_chromeClient->closePagePopup(m_popup);
 }
 
@@ skipping 114 matching lines @@
 }
 
 void DateTimeChooserImpl::closePopup()
 {
     endChooser();
 }
 
 void DateTimeChooserImpl::didClosePopup()
 {
     ASSERT(m_client);
-    m_popup = 0;
+    m_popup = nullptr;
     m_client->didEndChooser();
 }
 
 } // namespace blink
 
 #endif // ENABLE(INPUT_MULTIPLE_FIELDS_UI)