Oilpan: move BaseChooserOnlyDateAndTimeInputType to the heap.

third_party/WebKit/Source/web/ExternalDateTimeChooser.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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 45 matching lines @@
         m_chooser->didChooseValue(value);
         delete this;
     }
 
     void didCancelChooser() override
     {
         m_chooser->didCancelChooser();
         delete this;
     }
 
-    RefPtr<ExternalDateTimeChooser> m_chooser;
+    RefPtrWillBePersistent<ExternalDateTimeChooser> m_chooser;
 };
 
 ExternalDateTimeChooser::~ExternalDateTimeChooser()
 {
 }
 
+DEFINE_TRACE(ExternalDateTimeChooser)
+{
+    visitor->trace(m_client);
+    DateTimeChooser::trace(visitor);
+}
+
 ExternalDateTimeChooser::ExternalDateTimeChooser(DateTimeChooserClient* client)
     : m_client(client)
 {
     ASSERT(client);
 }
 
-PassRefPtr<ExternalDateTimeChooser> ExternalDateTimeChooser::create(ChromeClientImpl* chromeClient, WebViewClient* webViewClient, DateTimeChooserClient* client, const DateTimeChooserParameters& parameters)
+PassRefPtrWillBeRawPtr<ExternalDateTimeChooser> ExternalDateTimeChooser::create(ChromeClientImpl* chromeClient, WebViewClient* webViewClient, DateTimeChooserClient* client, const DateTimeChooserParameters& parameters)
 {
     ASSERT(chromeClient);
-    RefPtr<ExternalDateTimeChooser> chooser = adoptRef(new ExternalDateTimeChooser(client));
+    RefPtrWillBeRawPtr<ExternalDateTimeChooser> chooser = adoptRefWillBeNoop(new ExternalDateTimeChooser(client));
     if (!chooser->openDateTimeChooser(chromeClient, webViewClient, parameters))
         chooser.clear();
     return chooser.release();
 }
 
 
 static WebDateTimeInputType toWebDateTimeInputType(const AtomicString& source)
 {
     if (source == InputTypeNames::date)
         return WebDateTimeInputTypeDate;
@@ skipping 62 matching lines @@
 
 void ExternalDateTimeChooser::didCancelChooser()
 {
     if (m_client)
         m_client->didEndChooser();
 }
 
 void ExternalDateTimeChooser::endChooser()
 {
     DateTimeChooserClient* client = m_client;
-    m_client = 0;
+    m_client = nullptr;
     client->didEndChooser();
 }
 
 AXObject* ExternalDateTimeChooser::rootAXObject()
 {
-    return 0;
+    return nullptr;
 }
 
 } // namespace blink
 
 #endif