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

Source/WebKit/chromium/src/IDBDatabaseBackendProxy.h

Index: Source/WebKit/chromium/src/IDBDatabaseBackendProxy.h
diff --git a/Source/WebKit/chromium/src/IDBDatabaseBackendProxy.h b/Source/WebKit/chromium/src/IDBDatabaseBackendProxy.h
index 089b92f17e7241e0243e14324154d53582746c3f..51508728339c708727b9f11e0698834ff647b319 100644
--- a/Source/WebKit/chromium/src/IDBDatabaseBackendProxy.h
+++ b/Source/WebKit/chromium/src/IDBDatabaseBackendProxy.h
@@ -37,13 +37,13 @@ class WebIDBDatabase;
 
 class IDBDatabaseBackendProxy : public WebCore::IDBDatabaseBackendInterface {
 public:
-    static PassRefPtr<WebCore::IDBDatabaseBackendInterface> create(PassOwnPtr<WebIDBDatabase>);
+    static WebCore::IDBDatabaseBackendInterface* create(PassOwnPtr<WebIDBDatabase>);
     virtual ~IDBDatabaseBackendProxy();
 
     virtual void createObjectStore(int64_t transactionId, int64_t objectStoreId, const String& name, const WebCore::IDBKeyPath&, bool autoIncrement);
     virtual void deleteObjectStore(int64_t transactionId, int64_t objectStoreId);
-    virtual void createTransaction(int64_t, PassRefPtr<WebCore::IDBDatabaseCallbacks>, const Vector<int64_t>&, unsigned short mode);
-    virtual void close(PassRefPtr<WebCore::IDBDatabaseCallbacks>);
+    virtual void createTransaction(int64_t, WebCore::IDBDatabaseCallbacks*, const Vector<int64_t>&, unsigned short mode);
+    virtual void close(WebCore::IDBDatabaseCallbacks*);
 
     virtual void commit(int64_t);
     virtual void abort(int64_t);
@@ -61,6 +61,8 @@ public:
     virtual void createIndex(int64_t transactionId, int64_t objectStoreId, int64_t indexId, const String& name, const WebCore::IDBKeyPath&, bool unique, bool multiEntry) OVERRIDE;
     virtual void deleteIndex(int64_t transactionId, int64_t objectStoreId, int64_t indexId) OVERRIDE;
 
+    virtual void trace(WebCore::Visitor*) const OVERRIDE { }
+
 private:
     IDBDatabaseBackendProxy(PassOwnPtr<WebIDBDatabase>);