Move the Widget hierarchy to the Oilpan heap.

Source/web/PopupContainer.h

 
 /*
  * 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.
@@ skipping 16 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef PopupContainer_h
 #define PopupContainer_h
 
 #include "platform/PopupMenuStyle.h"
 #include "platform/geometry/FloatQuad.h"
+#include "platform/heap/Handle.h"
 #include "web/PopupListBox.h"
 
 namespace blink {
 
 class ChromeClient;
 class FrameView;
 class PopupContainerClient;
 class PopupMenuClient;
 struct WebPopupMenuInfo;
 
 // This class wraps a PopupListBox. It positions the popup, paints the border
 // around it, and forwards input events.
 // FIXME(skobes): This class can probably be combined with PopupListBox.
 class PopupContainer final : public Widget {
 public:
-    static PassRefPtr<PopupContainer> create(PopupMenuClient*, bool deviceSupportsTouch);
+    static PassRefPtrWillBeRawPtr<PopupContainer> create(PopupMenuClient*, bool deviceSupportsTouch);
 
     // Whether a key event should be sent to this popup.
     bool isInterestedInEventForKey(int keyCode);
 
     // Widget
     virtual void paint(GraphicsContext*, const IntRect&) override;
     virtual void hide() override;
     virtual HostWindow* hostWindow() const override;
     virtual void invalidateRect(const IntRect&) override;
     virtual IntPoint convertChildToSelf(const Widget* child, const IntPoint&) const override;
@@ skipping 54 matching lines @@
     // While hovering popup menu window, we want to show tool tip message.
     String getSelectedItemToolTip();
 
     // This is public for testing.
     static IntRect layoutAndCalculateWidgetRectInternal(IntRect widgetRectInScreen, int targetControlHeight, const FloatRect& windowRect, const FloatRect& screen, bool isRTL, const int rtlOffset, const int verticalOffset, const IntSize& transformOffset, PopupContent*, bool& needToResizeView);
 
     void disconnectClient() { m_listBox->disconnectClient(); }
 
     void updateFromElement() { m_listBox->updateFromElement(); }
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
     friend class WTF::RefCounted<PopupContainer>;
 
     PopupContainer(PopupMenuClient*, bool deviceSupportsTouch);
     virtual ~PopupContainer();
 
     // Paint the border.
     void paintBorder(GraphicsContext*, const IntRect&);
 
     // Layout and calculate popup widget size and location and returns it as IntRect.
     IntRect layoutAndCalculateWidgetRect(int targetControlHeight, const IntSize& transformOffset, const IntPoint& popupInitialCoordinate);
 
     void fitToListBox();
 
     void popupOpened(const IntRect& bounds);
     void getPopupMenuInfo(WebPopupMenuInfo*);
 
     // Returns the ChromeClient of the page this popup is associated with.
     ChromeClient& chromeClient();
 
-    RefPtr<PopupListBox> m_listBox;
-    RefPtr<FrameView> m_frameView;
+    RefPtrWillBeMember<PopupListBox> m_listBox;
+    RefPtrWillBeMember<FrameView> m_frameView;
 
     // m_controlPosition contains the transformed position of the
     // <select>/<input> associated with this popup. m_controlSize is the size
     // of the <select>/<input> without transform.
     // The popup menu will be positioned as follows:
     // LTR : If the popup is positioned down it will align with the bottom left
     //       of m_controlPosition (p4)
     //       If the popup is positioned up it will align with the top left of
     //       m_controlPosition (p1)
     // RTL : If the popup is positioned down it will align with the bottom right
     //       of m_controlPosition (p3)
     //       If the popup is positioned up it will align with the top right of
     //       m_controlPosition (p2)
     FloatQuad m_controlPosition;
     IntSize m_controlSize;
 
     // Whether the popup is currently open.
     bool m_popupOpen;
 
     PopupContainerClient* m_client;
 };
 
 } // namespace blink
 
 #endif