/usr/bin/gnome-terminal.wrapper is in gnome-terminal 3.6.2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | #! /usr/bin/perl -w
my $login=0;
while ($opt = shift(@ARGV))
{
    if ($opt eq '-display')
    {
	$ENV{'DISPLAY'} = shift(@ARGV);
    }
    elsif ($opt eq '-name')
    {
	$arg = shift(@ARGV);
	push(@args, "--window-with-profile=$arg");
    }
    elsif ($opt eq '-n')
    {
	# Accept but ignore
	print STDERR "$0: to set an icon, please use -name <profile> and set a profile icon\n"
    }
    elsif ($opt eq '-T' || $opt eq '-title')
    {
	push(@args, '-t', shift(@ARGV));
    }
    elsif ($opt eq '-ls')
    {
	$login = 1;
    }
    elsif ($opt eq '+ls')
    {
	$login = 0;
    }
    elsif ($opt eq '-geometry')
    {
	$arg = shift(@ARGV);
	push(@args, "--geometry=$arg");
    }
    elsif ($opt eq '-fn')
    {
	$arg = shift(@ARGV);
	push(@args, "--font=$arg");
    }
    elsif ($opt eq '-fg')
    {
	$arg = shift(@ARGV);
	push(@args, "--foreground=$arg");
    }
    elsif ($opt eq '-bg')
    {
	$arg = shift(@ARGV);
	push(@args, "--background=$arg");
    }
    elsif ($opt eq '-tn')
    {
	$arg = shift(@ARGV);
	push(@args, "--termname=$arg");
    }
    elsif ($opt eq '-e')
    {
	$arg = shift(@ARGV);
	if (@ARGV)
	{
	    push(@args, '-x', $arg, @ARGV);
	    last;
	}
	else
	{
	    push(@args, '-e', $arg);
	}
	last;
    }
    elsif ($opt eq '-h' || $opt eq '--help')
    {
	push(@args, '--help');
    }
}
if ($login == 1)
{
    @args = ('--login', @args);
}
exec('gnome-terminal',@args);
 |