Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/modules/notifications/WorkerGlobalScopeNotifications.cpp

Index: Source/modules/notifications/WorkerGlobalScopeNotifications.cpp
diff --git a/Source/modules/notifications/WorkerGlobalScopeNotifications.cpp b/Source/modules/notifications/WorkerGlobalScopeNotifications.cpp
index d2627658a3aab35185eb56bb55debdbb94c8a18b..937d39e8d0202c5bf9d11dbddf5189751fe98065 100644
--- a/Source/modules/notifications/WorkerGlobalScopeNotifications.cpp
+++ b/Source/modules/notifications/WorkerGlobalScopeNotifications.cpp
@@ -36,7 +36,7 @@
 
 namespace WebCore {
 
-WorkerGlobalScopeNotifications::WorkerGlobalScopeNotifications(WorkerGlobalScope& context)
+WorkerGlobalScopeNotifications::WorkerGlobalScopeNotifications(RawPtr<WorkerGlobalScope> context)
     : m_context(context)
 {
 }
@@ -54,8 +54,8 @@ WorkerGlobalScopeNotifications& WorkerGlobalScopeNotifications::from(WorkerGloba
 {
     WorkerGlobalScopeNotifications* supplement = static_cast<WorkerGlobalScopeNotifications*>(WorkerSupplement::from(context, supplementName()));
     if (!supplement) {
-        supplement = new WorkerGlobalScopeNotifications(context);
-        WorkerSupplement::provideTo(context, supplementName(), adoptPtr(supplement));
+        supplement = new WorkerGlobalScopeNotifications(&context);
+        WorkerSupplement::provideTo(context, supplementName(), adoptPtrWillBeNoop(supplement));
     }
     return *supplement;
 }
@@ -68,10 +68,16 @@ NotificationCenter* WorkerGlobalScopeNotifications::webkitNotifications(WorkerGl
 NotificationCenter* WorkerGlobalScopeNotifications::webkitNotifications()
 {
     if (!m_notificationCenter)
-        m_notificationCenter = NotificationCenter::create(&m_context, m_context.thread()->getNotificationClient());
+        m_notificationCenter = NotificationCenter::create(m_context, m_context->thread()->getNotificationClient());
     return m_notificationCenter.get();
 }
 
+void WorkerGlobalScopeNotifications::trace(Visitor* visitor)
+{
+    visitor->trace(m_context);
+    visitor->trace(m_notificationCenter);
+}
+
 } // namespace WebCore
 
 #endif // ENABLE(LEGACY_NOTIFICATIONS)