Oilpan: Allocate all EventTarget derived types on the manged heap.

Source/core/html/ime/InputMethodContext.cpp

 /*
  * Copyright (C) 2013 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 19 matching lines @@
 
 #include "config.h"
 #include "core/html/ime/InputMethodContext.h"
 
 #include "core/dom/Text.h"
 #include "core/editing/InputMethodController.h"
 #include "core/frame/LocalFrame.h"
 
 namespace WebCore {
 
-PassOwnPtr<InputMethodContext> InputMethodContext::create(HTMLElement* element)
+PassOwnPtrWillBeRawPtr<InputMethodContext> InputMethodContext::create(HTMLElement* element)
 {
-    return adoptPtr(new InputMethodContext(element));
+    return adoptPtrWillBeRefCountedGarbageCollected(new InputMethodContext(element));
 }
 
 InputMethodContext::InputMethodContext(HTMLElement* element)
     : m_element(element)
 {
     ScriptWrappable::init(this);
 }
 
 InputMethodContext::~InputMethodContext()
 {
@@ skipping 125 matching lines @@
 void InputMethodContext::dispatchCandidateWindowUpdateEvent()
 {
     dispatchEvent(Event::create(EventTypeNames::candidatewindowupdate));
 }
 
 void InputMethodContext::dispatchCandidateWindowHideEvent()
 {
     dispatchEvent(Event::create(EventTypeNames::candidatewindowhide));
 }
 
+void InputMethodContext::trace(Visitor* visitor)
+{
+    visitor->trace(m_element);
+    EventTargetWithInlineData::trace(visitor);
+}
+
 } // namespace WebCore