actually backport change r4383 to branch 31

diff --git a/src/net/instaweb/automatic/system_test.sh b/src/net/instaweb/automatic/system_test.sh
index a21b0bf..ecfd067 100644
--- a/src/net/instaweb/automatic/system_test.sh
+++ b/src/net/instaweb/automatic/system_test.sh
@@ -296,6 +296,8 @@
   check_from "$OUT" fgrep -qi "format('woff')"
   check_not_from "$OUT" fgrep -qi "format('truetype')"
   check_not_from "$OUT" fgrep -qi "format('embedded-opentype')"
+  check_not_from "$OUT" fgrep -qi ".ttf"
+  check_not_from "$OUT" fgrep -qi ".eot"
 
   # Now try with IE6 user-agent. We do this with setting WGETRC due to
   # quoting madness
@@ -309,8 +311,8 @@
   # This should get an eot font. (It might also ship a woff, so we don't
   # check_not_from for that)
   OUT=$($WGET_DUMP $URL)
-  check_from "$OUT" fgrep -qi "format('embedded-opentype')"
-  check_not_from "$OUT" fgrep -qi "format('truetype')"
+  check_from "$OUT" fgrep -qi ".eot"
+  check_not_from "$OUT" fgrep -qi ".ttf"
   export WGETRC=$WGETRC_OLD
 fi