Oilpan: move editing objects to the heap.

Source/core/frame/LocalFrame.h

Index: Source/core/frame/LocalFrame.h
diff --git a/Source/core/frame/LocalFrame.h b/Source/core/frame/LocalFrame.h
index 4f2df691af686e3d6b7640c24a39cbc6b56687aa..ad1cd62f41b614ec920a4220ae90ef70728264d9 100644
--- a/Source/core/frame/LocalFrame.h
+++ b/Source/core/frame/LocalFrame.h
@@ -161,9 +161,9 @@ namespace WebCore {
         RefPtr<FrameView> m_view;
 
         OwnPtr<ScriptController> m_script;
-        const OwnPtr<Editor> m_editor;
+        const OwnPtrWillBePersistent<Editor> m_editor;
         const OwnPtr<SpellChecker> m_spellChecker;
-        const OwnPtr<FrameSelection> m_selection;
+        const OwnPtrWillBePersistent<FrameSelection> m_selection;
         const OwnPtr<EventHandler> m_eventHandler;
         const OwnPtr<FrameConsole> m_console;
         OwnPtr<InputMethodController> m_inputMethodController;