Use HTTPError.fromError to wrap an unexpended exception
Use HTTPError.fromError to wrap an unexpended exception

Change-Id: I1b598ce4bccf1b7fe71b1057884e7e628246a84a

wikimedia/restbase,d00rman/restbase,Pchelolo/restbase,milimetric/restbase,wikimedia/mediawiki-services-restbase,wikimedia/mediawiki-services-restbase,d00rman/restbase,wikimedia/restbase,cscott/restbase,milimetric/restbase,Pchelolo/restbase,cscott/restbase