Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h

Index: Source/modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h
diff --git a/Source/modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h b/Source/modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h
index a098f931bbc7bfcd1d744d986854a1cd9e5e6042..aca9bdc0c4ddd6f8dac8bf5b0230f666a383d121 100644
--- a/Source/modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h
+++ b/Source/modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h
@@ -27,20 +27,24 @@
 #ifndef WorkerGlobalScopeIndexedDatabase_h
 #define WorkerGlobalScopeIndexedDatabase_h
 
-#include "core/workers/WorkerSupplementable.h"
+#include "platform/Supplementable.h"
 
 namespace WebCore {
 
 class IDBFactory;
 class IDBFactoryBackendInterface;
 class ExecutionContext;
+class WorkerGlobalScope;
 
-class WorkerGlobalScopeIndexedDatabase FINAL : public WorkerSupplement {
+class WorkerGlobalScopeIndexedDatabase FINAL : public NoBaseWillBeGarbageCollected<WorkerGlobalScopeIndexedDatabase>, public WillBeHeapSupplement<WorkerGlobalScope> {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(WorkerGlobalScopeIndexedDatabase);
 public:
     virtual ~WorkerGlobalScopeIndexedDatabase();
-    static WorkerGlobalScopeIndexedDatabase& from(WorkerSupplementable&);
+    static WorkerGlobalScopeIndexedDatabase& from(WillBeHeapSupplementable<WorkerGlobalScope>&);
 
-    static IDBFactory* indexedDB(WorkerSupplementable&);
+    static IDBFactory* indexedDB(WillBeHeapSupplementable<WorkerGlobalScope>&);
+
+    virtual void trace(Visitor*);
 
 private:
     WorkerGlobalScopeIndexedDatabase();