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

Source/modules/indexeddb/IDBTransactionBackendImpl.cpp

Index: Source/modules/indexeddb/IDBTransactionBackendImpl.cpp
diff --git a/Source/modules/indexeddb/IDBTransactionBackendImpl.cpp b/Source/modules/indexeddb/IDBTransactionBackendImpl.cpp
index 44af5cf7ed5786d372ad64bcabe86dbb0cc97791..cb51f76161af6e99a41dd0d2abfde4ca5708d122 100644
--- a/Source/modules/indexeddb/IDBTransactionBackendImpl.cpp
+++ b/Source/modules/indexeddb/IDBTransactionBackendImpl.cpp
@@ -36,7 +36,7 @@
 
 namespace WebCore {
 
-PassRefPtr<IDBTransactionBackendImpl> IDBTransactionBackendImpl::create(int64_t id, PassRefPtr<IDBDatabaseCallbacks> callbacks, const Vector<int64_t>& objectStoreIds, IndexedDB::TransactionMode mode, IDBDatabaseBackendImpl* database)
+PassRefPtr<IDBTransactionBackendImpl> IDBTransactionBackendImpl::create(int64_t id, IDBDatabaseCallbacks* callbacks, const Vector<int64_t>& objectStoreIds, IndexedDB::TransactionMode mode, IDBDatabaseBackendImpl* database)
 {
     HashSet<int64_t> objectStoreHashSet;
     for (size_t i = 0; i < objectStoreIds.size(); ++i)
@@ -45,7 +45,7 @@ PassRefPtr<IDBTransactionBackendImpl> IDBTransactionBackendImpl::create(int64_t
     return adoptRef(new IDBTransactionBackendImpl(id, callbacks, objectStoreHashSet, mode, database));
 }
 
-IDBTransactionBackendImpl::IDBTransactionBackendImpl(int64_t id, PassRefPtr<IDBDatabaseCallbacks> callbacks, const HashSet<int64_t>& objectStoreIds, IndexedDB::TransactionMode mode, IDBDatabaseBackendImpl* database)
+IDBTransactionBackendImpl::IDBTransactionBackendImpl(int64_t id, IDBDatabaseCallbacks* callbacks, const HashSet<int64_t>& objectStoreIds, IndexedDB::TransactionMode mode, IDBDatabaseBackendImpl* database)
     : m_id(id)
     , m_objectStoreIds(objectStoreIds)
     , m_mode(mode)