Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/modules/performance/WorkerGlobalScopePerformance.cpp

Index: Source/modules/performance/WorkerGlobalScopePerformance.cpp
diff --git a/Source/modules/performance/WorkerGlobalScopePerformance.cpp b/Source/modules/performance/WorkerGlobalScopePerformance.cpp
index 1ecd5be35c3ea0087b287beb279a106a4b2eceb0..7f4242ca07d85c8ee4568d0913d76c206318f5a1 100644
--- a/Source/modules/performance/WorkerGlobalScopePerformance.cpp
+++ b/Source/modules/performance/WorkerGlobalScopePerformance.cpp
@@ -33,10 +33,31 @@
 #include "modules/performance/WorkerGlobalScopePerformance.h"
 
 #include "core/workers/WorkerGlobalScope.h"
+#include "heap/ThreadState.h"
 #include "modules/performance/WorkerPerformance.h"
 
 namespace WebCore {
 
+#if 0
+class WorkerPerformanceCleanupTask : public ThreadState::CleanupTask {
+public:
+    static PassOwnPtr<WorkerPerformanceCleanupTask> create(const RawPtr<WorkerGlobalScopePerformance>& p)
+    {
+        return adoptPtr(new WorkerPerformanceCleanupTask(p));
+    }
+
+    virtual void preCleanup()
+    {
+        m_performance->detach();
+    }
+
+private:
+    explicit WorkerPerformanceCleanupTask(const RawPtr<WorkerGlobalScopePerformance>& p) : m_performance(p) { }
+
+    RawPtr<WorkerGlobalScopePerformance> m_performance;
+};
+#endif
+
 WorkerGlobalScopePerformance::WorkerGlobalScopePerformance()
 {
 }
@@ -55,7 +76,7 @@ WorkerGlobalScopePerformance& WorkerGlobalScopePerformance::from(WorkerGlobalSco
     WorkerGlobalScopePerformance* supplement = static_cast<WorkerGlobalScopePerformance*>(WorkerSupplement::from(context, supplementName()));
     if (!supplement) {
         supplement = new WorkerGlobalScopePerformance();
-        provideTo(context, supplementName(), adoptPtr(supplement));
+        provideTo(context, supplementName(), adoptPtrWillBeNoop(supplement));
     }
     return *supplement;
 }
@@ -72,4 +93,9 @@ WorkerPerformance* WorkerGlobalScopePerformance::performance()
     return m_performance.get();
 }
 
+void WorkerGlobalScopePerformance::trace(Visitor* visitor)
+{
+    visitor->trace(m_performance);
+}
+
 } // namespace WebCore