Merge 72866 - Add send(ArrayBuffer) to XMLHttpRequest per XMLHttpRequest Leve...

LayoutTests/http/tests/xmlhttprequest/resources/post-echo-as-ascii.cgi

 #!/usr/bin/perl -w
 
 print "Content-type: text/plain\n\n"; 
 
 if ($ENV{'REQUEST_METHOD'} eq "POST") {
     read(STDIN, $request, $ENV{'CONTENT_LENGTH'})
                 || die "Could not get query\n";
     my @array = split //, $request;
     @array = map(ord, @array);
     print "@array";
 } else {
     print "Wrong method: " . $ENV{'REQUEST_METHOD'} . "\n";
 }