[oilpan] Move IDBDatabase, IDBDatabaseCallbacks, IDBDatabaseBackendInterface and other related clas…

Source/modules/indexeddb/IDBDatabaseCallbacks.h

Index: Source/modules/indexeddb/IDBDatabaseCallbacks.h
diff --git a/Source/modules/indexeddb/IDBDatabaseCallbacks.h b/Source/modules/indexeddb/IDBDatabaseCallbacks.h
index 9b9c168d0062aa0c6c6e8a284058a5206bb1d10c..1ebf9ce0e1ff5887381219ba451e40deb96a5ce8 100644
--- a/Source/modules/indexeddb/IDBDatabaseCallbacks.h
+++ b/Source/modules/indexeddb/IDBDatabaseCallbacks.h
@@ -26,13 +26,15 @@
 #ifndef IDBDatabaseCallbacks_h
 #define IDBDatabaseCallbacks_h
 
+#include "heap/Handle.h"
 #include "modules/indexeddb/IDBDatabaseError.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
-class IDBDatabaseCallbacks : public RefCounted<IDBDatabaseCallbacks> {
+class IDBDatabaseCallbacks : public HeapAllocatedFinalized<IDBDatabaseCallbacks> {
+    DECLARE_GC_INFO
 public:
     virtual ~IDBDatabaseCallbacks() { }
 
@@ -41,6 +43,8 @@ public:
 
     virtual void onAbort(int64_t transactionId, PassRefPtr<IDBDatabaseError>) = 0;
     virtual void onComplete(int64_t transactionId) = 0;
+
+    virtual void trace(Visitor*) const = 0;
 };
 
 } // namespace WebCore