Oilpan: Prepare moving DateTimeChooser to Oilpan

Source/web/DateTimeChooserImpl.cpp

Index: Source/web/DateTimeChooserImpl.cpp
diff --git a/Source/web/DateTimeChooserImpl.cpp b/Source/web/DateTimeChooserImpl.cpp
index e63c539f895c0ce91c3944801bb459a69c335cab..6827308913359303765dc8952b2da7ac1b30bd71 100644
--- a/Source/web/DateTimeChooserImpl.cpp
+++ b/Source/web/DateTimeChooserImpl.cpp
@@ -60,9 +60,9 @@ DateTimeChooserImpl::DateTimeChooserImpl(ChromeClientImpl* chromeClient, WebCore
     m_popup = m_chromeClient->openPagePopup(this, m_parameters.anchorRectInRootView);
 }
 
-PassRefPtr<DateTimeChooserImpl> DateTimeChooserImpl::create(ChromeClientImpl* chromeClient, WebCore::DateTimeChooserClient* client, const WebCore::DateTimeChooserParameters& parameters)
+PassRefPtrWillBeRawPtr<DateTimeChooserImpl> DateTimeChooserImpl::create(ChromeClientImpl* chromeClient, WebCore::DateTimeChooserClient* client, const WebCore::DateTimeChooserParameters& parameters)
 {
-    return adoptRef(new DateTimeChooserImpl(chromeClient, client, parameters));
+    return adoptRefWillBeNoop(new DateTimeChooserImpl(chromeClient, client, parameters));
 }
 
 DateTimeChooserImpl::~DateTimeChooserImpl()
@@ -174,7 +174,7 @@ WebCore::Locale& DateTimeChooserImpl::locale()
 
 void DateTimeChooserImpl::setValueAndClosePopup(int numValue, const String& stringValue)
 {
-    RefPtr<DateTimeChooserImpl> protector(this);
+    RefPtrWillBeRawPtr<DateTimeChooserImpl> protector(this);
     if (numValue >= 0)
         setValue(stringValue);
     endChooser();
@@ -197,6 +197,12 @@ void DateTimeChooserImpl::didClosePopup()
     m_client->didEndChooser();
 }
 
+void DateTimeChooserImpl::trace(Visitor* visitor)
+{
+    visitor->trace(m_client);
+    DateTimeChooser::trace(visitor);
+}
+
 } // namespace blink
 
 #endif // ENABLE(INPUT_MULTIPLE_FIELDS_UI)