I'm expanding this to fix a couple of bugs in determining the file name for...

third_party/WebKit/WebCore/platform/chromium/ClipboardChromium.h

 // Copyright (c) 2008, 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 29 matching lines @@
     class ChromiumDataObject;
     class IntPoint;
 
     class ClipboardChromium : public Clipboard, public CachedResourceClient {
     public:
         ~ClipboardChromium() {}
 
         static PassRefPtr<ClipboardChromium> create(
             bool isForDragging, PassRefPtr<ChromiumDataObject>, ClipboardAccessPolicy);
 
+        // Returns the file name (not including the extension). This removes any
+        // invalid file system characters as well as making sure the
+        // path + extension is not bigger than allowed by the file system.
+        // This may change the file extension in dataObject.
+        static String validateFileName(const String& title, ChromiumDataObject* dataObject);
+
         virtual void clearData(const String& type);
         void clearAllData();
         String getData(const String& type, bool& success) const;
         bool setData(const String& type, const String& data);
 
         // extensions beyond IE's API
         HashSet<String> types() const;
 
         void setDragImage(CachedImage*, const IntPoint&);
         void setDragImageElement(Node*, const IntPoint&);
@@ skipping 15 matching lines @@
 
         void resetFromClipboard();
         void setDragImage(CachedImage*, Node*, const IntPoint&);
         RefPtr<ChromiumDataObject> m_dataObject;
         Frame* m_frame;
     };
 
 } // namespace WebCore
 
 #endif // ClipboardChromium_h