Added a new stream return code - NS_BASE_STREAM_FULL. This is returned when a stream is full and must be read before more data can be added...

xpcom/io/nsIBaseStream.idl

@@ -41,5 +41,7 @@ interface nsIBaseStream : nsISupports
 #define NS_BASE_STREAM_BAD_CONVERSION NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_BASE, 6)
 
 #define NS_BASE_STREAM_WOULD_BLOCK    NS_ERROR_GENERATE_SUCCESS(NS_ERROR_MODULE_BASE, 7)
+
+#define NS_BASE_STREAM_FULL           NS_ERROR_GENERATE_SUCCESS(NS_ERROR_MODULE_BASE, 8)
 //@}
 %}