Couple of minor changes to the WebKitAPI. This is a small step in a larger work-in-progress. See th…

public/platform/WebFileWriter.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 18 matching lines @@
  */
 
 #ifndef WebFileWriter_h
 #define WebFileWriter_h
 
 #include "WebCommon.h"
 #include "WebString.h"
 
 namespace WebKit {
 
+class WebString;
 class WebURL;
 
 class WebFileWriter {
 public:
     virtual ~WebFileWriter() { }
 
     // Only one write or one truncate operation can be in progress at a time.
     // These functions are asynchronous and will report results through the WebFileWriter's associated WebFileWriterClient.
-    virtual void write(long long position, const WebURL& blobURL) = 0;
+    virtual void write(long long position, const WebURL& blobURL) { } // DEPRECATED
+    virtual void write(long long position, const WebString& blobUUID) { }
     virtual void truncate(long long length) = 0;
 
     // Cancel will attempt to abort a running write or truncate. However, it may not be possible to cancel an in-progress action, or the call may have come in too late. Partial writes are possible.
     // Do not call cancel when there is no write or truncate in progress.
     virtual void cancel() = 0;
 };
 
 } // namespace WebKit
 
 #endif