Oilpan: Prepare to move AbstractSQLTransaction and SQLTransaction to Oilpan heap.

Source/modules/webdatabase/AbstractSQLTransaction.h

Index: Source/modules/webdatabase/AbstractSQLTransaction.h
diff --git a/Source/modules/webdatabase/AbstractSQLTransaction.h b/Source/modules/webdatabase/AbstractSQLTransaction.h
index ba8e9997e5d7971df8c4c82f53d9a52616c1532a..5d15f3ef8e8d5f588cc64229bdca1f4bf8274ef9 100644
--- a/Source/modules/webdatabase/AbstractSQLTransaction.h
+++ b/Source/modules/webdatabase/AbstractSQLTransaction.h
@@ -26,6 +26,7 @@
 #ifndef AbstractSQLTransaction_h
 #define AbstractSQLTransaction_h
 
+#include "heap/Handle.h"
 #include "modules/webdatabase/SQLTransactionState.h"
 #include "wtf/ThreadSafeRefCounted.h"
 
@@ -33,9 +34,10 @@ namespace WebCore {
 
 class AbstractSQLTransactionBackend;
 
-class AbstractSQLTransaction : public ThreadSafeRefCounted<AbstractSQLTransaction> {
+class AbstractSQLTransaction : public ThreadSafeRefCountedWillBeGarbageCollectedFinalized<AbstractSQLTransaction> {
 public:
     virtual ~AbstractSQLTransaction() { }
+    virtual void trace(Visitor*) { }

[haraken, 2014/03/14 08:53:01]

Can this be a pure virtual method? This class has pure virtual methods only.

[Erik Corry, 2014/03/14 09:07:11]

That's a good idea and also means you don't have to call it from the subclasses
(this is how the plugin works).

[tkent, 2014/03/15 17:00:28]

Done.

 
     virtual void requestTransitToState(SQLTransactionState) = 0;