Move the Widget hierarchy to the Oilpan heap.

Source/web/PopupContainer.cpp

 /*
  * Copyright (c) 2011, 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 66 matching lines @@
 
     // FIXME: This is a horrible hack since PlatformWheelEvent has no setters for x/y.
     PlatformWheelEvent relativeEvent = e;
     IntPoint& relativePos = const_cast<IntPoint&>(relativeEvent.position());
     relativePos.setX(pos.x());
     relativePos.setY(pos.y());
     return relativeEvent;
 }
 
 // static
-PassRefPtr<PopupContainer> PopupContainer::create(PopupMenuClient* client, bool deviceSupportsTouch)
+PassRefPtrWillBeRawPtr<PopupContainer> PopupContainer::create(PopupMenuClient* client, bool deviceSupportsTouch)
 {
-    return adoptRef(new PopupContainer(client, deviceSupportsTouch));
+    return adoptRefWillBeNoop(new PopupContainer(client, deviceSupportsTouch));
 }
 
 PopupContainer::PopupContainer(PopupMenuClient* client, bool deviceSupportsTouch)
     : m_listBox(PopupListBox::create(client, deviceSupportsTouch, this))
     , m_popupOpen(false)
     , m_client(0)
 {
 }
 
 PopupContainer::~PopupContainer()
 {
+#if !ENABLE(OILPAN)
     if (m_listBox->parent())
         m_listBox->setParent(0);
+#endif
+}
+
+void PopupContainer::trace(Visitor* visitor)
+{
+    visitor->trace(m_frameView);
+    visitor->trace(m_listBox);
+    Widget::trace(visitor);
 }
 
 IntRect PopupContainer::layoutAndCalculateWidgetRectInternal(IntRect widgetRectInScreen, int targetControlHeight, const FloatRect& windowRect, const FloatRect& screen, bool isRTL, const int rtlOffset, const int verticalOffset, const IntSize& transformOffset, PopupContent* listBox, bool& needToResizeView)
 {
     ASSERT(listBox);
     if (windowRect.x() >= screen.x() && windowRect.maxX() <= screen.maxX() && (widgetRectInScreen.x() < screen.x() || widgetRectInScreen.maxX() > screen.maxX())) {
         // First, inverse the popup alignment if it does not fit the screen -
         // this might fix things (or make them better).
         IntRect inverseWidgetRectInScreen = widgetRectInScreen;
         inverseWidgetRectInScreen.setX(inverseWidgetRectInScreen.x() + (isRTL ? -rtlOffset : rtlOffset));
@@ skipping 165 matching lines @@
 
 bool PopupContainer::handleMouseMoveEvent(const PlatformMouseEvent& event)
 {
     UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
     return m_listBox->handleMouseMoveEvent(
         constructRelativeMouseEvent(event, this, m_listBox.get()));
 }
 
 bool PopupContainer::handleMouseReleaseEvent(const PlatformMouseEvent& event)
 {
-    RefPtr<PopupContainer> protect(this);
+    RefPtrWillBeRawPtr<PopupContainer> protect(this);
     UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
     return m_listBox->handleMouseReleaseEvent(
         constructRelativeMouseEvent(event, this, m_listBox.get()));
 }
 
 bool PopupContainer::handleWheelEvent(const PlatformWheelEvent& event)
 {
     UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
     return m_listBox->handleWheelEvent(
         constructRelativeWheelEvent(event, this, m_listBox.get()));
@@ skipping 250 matching lines @@
 }
 
 IntPoint PopupContainer::convertSelfToChild(const Widget* child, const IntPoint& point) const
 {
     IntPoint newPoint = point;
     newPoint.moveBy(-child->location());
     return newPoint;
 }
 
 } // namespace blink