Oilpan: move BaseChooserOnlyDateAndTimeInputType to the heap.

third_party/WebKit/Source/web/ExternalDateTimeChooser.cpp

Index: third_party/WebKit/Source/web/ExternalDateTimeChooser.cpp
diff --git a/third_party/WebKit/Source/web/ExternalDateTimeChooser.cpp b/third_party/WebKit/Source/web/ExternalDateTimeChooser.cpp
index b609d71bea0134cef862b172e19064f899ab4845..bb72787b7a4761e25ab96531dd440cad22536d90 100644
--- a/third_party/WebKit/Source/web/ExternalDateTimeChooser.cpp
+++ b/third_party/WebKit/Source/web/ExternalDateTimeChooser.cpp
@@ -63,23 +63,29 @@ private:
         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();
@@ -162,13 +168,13 @@ void ExternalDateTimeChooser::didCancelChooser()
 void ExternalDateTimeChooser::endChooser()
 {
     DateTimeChooserClient* client = m_client;
-    m_client = 0;
+    m_client = nullptr;
     client->didEndChooser();
 }
 
 AXObject* ExternalDateTimeChooser::rootAXObject()
 {
-    return 0;
+    return nullptr;
 }
 
 } // namespace blink