Run pdfium_test in only one place in make_expected.sh.

Change-Id: I91c55632627bb9cc0d6b61ae1004db1343d6bff2
Reviewed-on: https://pdfium-review.googlesource.com/39910
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
diff --git a/testing/tools/make_expected.sh b/testing/tools/make_expected.sh
index 9b7e3d8..d4d219a 100755
--- a/testing/tools/make_expected.sh
+++ b/testing/tools/make_expected.sh
@@ -19,11 +19,11 @@
   INFILE="$1"
   echo $INFILE | grep -qs ' ' && echo space in filename detected && exit 1
   EVTFILE="${INFILE%.*}.evt"
+  SEND_EVENTS=
   if [ -f "$EVTFILE" ]; then
-    out/Debug/pdfium_test --send-events --time=$TEST_SEED_TIME --png $INFILE
-  else
-    out/Debug/pdfium_test --time=$TEST_SEED_TIME --png $INFILE
+    SEND_EVENTS="--send-events"
   fi
+  out/Debug/pdfium_test "$SEND_EVENTS" --time=$TEST_SEED_TIME --png $INFILE
   RESULTS="$INFILE.*.png"
   for RESULT in $RESULTS ; do
     EXPECTED=`echo -n $RESULT | sed 's/[.]pdf[.]/_expected.pdf./'`