Decouple FileSystem and WebSQL callbacks from VoidCallback and it non-refcounted

Source/modules/filesystem/Entry.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class DirectoryEntry;
 class EntryCallback;
 class EntrySync;
 class ErrorCallback;
 class MetadataCallback;
-class VoidCallback;
+class FileSystemVoidCallback;
 
 class Entry : public EntryBase, public ScriptWrappable {
 public:
     DOMFileSystem* filesystem() const { return static_cast<DOMFileSystem*>(m_fileSystem.get()); }
 
-    void getMetadata(PassRefPtr<MetadataCallback> successCallback = 0, PassRefPtr<ErrorCallback> errorCallback = 0);
-    void moveTo(PassRefPtr<DirectoryEntry> parent, const String& name = String(), PassRefPtr<EntryCallback> successCallback = 0, PassRefPtr<ErrorCallback> errorCallback = 0) const;
-    void copyTo(PassRefPtr<DirectoryEntry> parent, const String& name = String(), PassRefPtr<EntryCallback> successCallback = 0, PassRefPtr<ErrorCallback> errorCallback = 0) const;
-    void remove(PassRefPtr<VoidCallback> successCallback = 0, PassRefPtr<ErrorCallback> errorCallback = 0) const;
-    void getParent(PassRefPtr<EntryCallback> successCallback = 0, PassRefPtr<ErrorCallback> errorCallback = 0) const;
+    void getMetadata(PassRefPtr<MetadataCallback> successCallback = 0, PassRefPtr<ErrorCallback> = 0);
+    void moveTo(PassRefPtr<DirectoryEntry> parent, const String& name = String(), PassRefPtr<EntryCallback> successCallback = 0, PassRefPtr<ErrorCallback> = 0) const;
+    void copyTo(PassRefPtr<DirectoryEntry> parent, const String& name = String(), PassRefPtr<EntryCallback> successCallback = 0, PassRefPtr<ErrorCallback> = 0) const;
+    void remove(PassRefPtr<FileSystemVoidCallback> successCallback = 0, PassRefPtr<ErrorCallback> = 0) const;
+    void getParent(PassRefPtr<EntryCallback> successCallback = 0, PassRefPtr<ErrorCallback> = 0) const;
 
 protected:
     Entry(PassRefPtr<DOMFileSystemBase>, const String& fullPath);
 };
 
 } // namespace WebCore
 
 #endif // Entry_h