Oilpan: Change Persistent<> data members to Member<> in HitTestResult.

Source/core/page/ContextMenuController.cpp

Index: Source/core/page/ContextMenuController.cpp
diff --git a/Source/core/page/ContextMenuController.cpp b/Source/core/page/ContextMenuController.cpp
index 9e97e69bafd3d7dd0439fc22ff6960a5bce5e70a..13680a5486f29ff9378e8ae7b4d748ff8590b81c 100644
--- a/Source/core/page/ContextMenuController.cpp
+++ b/Source/core/page/ContextMenuController.cpp
@@ -50,9 +50,14 @@ ContextMenuController::~ContextMenuController()
 {
 }
 
-PassOwnPtr<ContextMenuController> ContextMenuController::create(Page* page, ContextMenuClient* client)
+PassOwnPtrWillBeRawPtr<ContextMenuController> ContextMenuController::create(Page* page, ContextMenuClient* client)
 {
-    return adoptPtr(new ContextMenuController(page, client));
+    return adoptPtrWillBeNoop(new ContextMenuController(page, client));
+}
+
+void ContextMenuController::trace(Visitor* visitor)
+{
+    visitor->trace(m_hitTestResult);
 }
 
 void ContextMenuController::clearContextMenu()