Adding test suppression for image-surface GM

Test needs to be rebaselined on gpu

TBR=bsalomon

Review URL: https://codereview.chromium.org/602203006
diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index 377575e..be7d4d3 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -33,6 +33,9 @@
 ## epoger will rebaseline by 25 Dec 2013
 #gradtext
 
+# junov
+image-surface
+
 # jvanverth
 fontcache