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

Source/modules/webdatabase/SQLTransactionBackend.cpp

Index: Source/modules/webdatabase/SQLTransactionBackend.cpp
diff --git a/Source/modules/webdatabase/SQLTransactionBackend.cpp b/Source/modules/webdatabase/SQLTransactionBackend.cpp
index 866ca3744060f47c982ccd288aa8ffb4f18590e0..2349bdb8f2e8556f1d03585081ad745cda2e91f8 100644
--- a/Source/modules/webdatabase/SQLTransactionBackend.cpp
+++ b/Source/modules/webdatabase/SQLTransactionBackend.cpp
@@ -341,13 +341,13 @@
 namespace WebCore {
 
 PassRefPtr<SQLTransactionBackend> SQLTransactionBackend::create(DatabaseBackend* db,
-    PassRefPtr<AbstractSQLTransaction> frontend, PassRefPtr<SQLTransactionWrapper> wrapper, bool readOnly)
+    PassRefPtrWillBeRawPtr<AbstractSQLTransaction> frontend, PassRefPtr<SQLTransactionWrapper> wrapper, bool readOnly)
 {
     return adoptRef(new SQLTransactionBackend(db, frontend, wrapper, readOnly));
 }
 
 SQLTransactionBackend::SQLTransactionBackend(DatabaseBackend* db,
-    PassRefPtr<AbstractSQLTransaction> frontend, PassRefPtr<SQLTransactionWrapper> wrapper, bool readOnly)
+    PassRefPtrWillBeRawPtr<AbstractSQLTransaction> frontend, PassRefPtr<SQLTransactionWrapper> wrapper, bool readOnly)
     : m_frontend(frontend)
     , m_database(db)
     , m_wrapper(wrapper)