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

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

Index: third_party/WebKit/WebCore/platform/chromium/ClipboardChromium.h
===================================================================
--- third_party/WebKit/WebCore/platform/chromium/ClipboardChromium.h	(revision 10151)
+++ third_party/WebKit/WebCore/platform/chromium/ClipboardChromium.h	(working copy)
@@ -47,6 +47,12 @@
         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;