Bug 1093839 - remove unused declaration of SerializeJSValVariant. r=smaug

docshell/base/nsDocShell.h

@@ -333,11 +333,6 @@ protected:
     nsresult ScrollToAnchor(nsACString & curHash, nsACString & newHash,
                             uint32_t aLoadType);
 
-    // Tries to serialize a given variant using structured clone.  This only
-    // works if the variant is backed by a JSVal.
-    nsresult SerializeJSValVariant(JSContext *aCx, nsIVariant *aData,
-                                   nsAString &aResult);
-
     // Returns true if would have called FireOnLocationChange,
     // but did not because aFireOnLocationChange was false on entry.
     // In this case it is the caller's responsibility to ensure