Renamed bug_492 pixel test expected png.

The test should be reenabled by this change. Also updated the
expected .png, as it's slightly displaced since it was run a year ago.

Change-Id: I2e7003f8b353212804d3fd7af08c41476351f575
Reviewed-on: https://pdfium-review.googlesource.com/6813
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>

testing/SUPPRESSIONS

diff --git a/testing/SUPPRESSIONS b/testing/SUPPRESSIONS
index bccf0d6..8eac8b6 100644
--- a/testing/SUPPRESSIONS
+++ b/testing/SUPPRESSIONS
@@ -286,6 +286,7 @@
 zh_function_list.pdf mac * *
 zh_shared_document.pdf mac * *
 
+bug_492.in * nov8 *
 bug_679643.in * * noxfa
 bug_679642.in * * noxfa
 

testing/resources/pixel/bug_492_expected.pdf.0.png

diff --git a/testing/resources/pixel/bug_492.pdf.0.png b/testing/resources/pixel/bug_492_expected.pdf.0.png
similarity index 94%
rename from testing/resources/pixel/bug_492.pdf.0.png
rename to testing/resources/pixel/bug_492_expected.pdf.0.png
index adc4b53..46b6c9b 100644
--- a/testing/resources/pixel/bug_492.pdf.0.png
+++ b/testing/resources/pixel/bug_492_expected.pdf.0.png
Binary files differ