IMproved printing error codes

Bug 86378 r=dcone sr=attinasi

layout/html/base/src/printing.properties

@@ -67,6 +67,10 @@ NS_ERROR_NOT_IMPLEMENTED=Some printing functionality is not implemented yet.
 NS_ERROR_NOT_AVAILABLE=Not available
 NS_ERROR_ABORT=The print job was aborted, or canceled.
 NS_ERROR_FAILURE=Printing failed for some reason.
+NS_ERROR_GFX_PRINTER_STARTDOC=Printing failed when starting the document.
+NS_ERROR_GFX_PRINTER_ENDDOC=Printing failed when completing the document.
+NS_ERROR_GFX_PRINTER_STARTPAGE=Printing failed when starting the page.
+NS_ERROR_GFX_PRINTER_ENDPAGE=Printing failed when completing the page.
 
 # No printers available
 noprinter=No printers available.