Bug 969490.  Add a Components.utils.now() that provides access in system JS to a monotonic timer, returning a fractional number milliseconds since process creation.  r=bholley
Bug 1057176.  Don't try to use the document's window for regexp evaluation in nsContentUtils::IsPatternMatching, since there might not be one.  Just use the unprivileged junk scope.  r=bholley
Bug 716491.  Return a .status of 200 and .statusText of "OK" for successful non-HTTP XHR loads.  r=smaug