Mark morphology test as expected-to-fail for poppler.

expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json

Index: expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json
diff --git a/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json b/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json
index 6c50acd3d29dd202ae7affd1cbe640e6370cb62e..891e1078547c9bb0a290c8a4f04ff6a94d36fcca 100644
--- a/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json
+++ b/expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json
@@ -10532,6 +10532,7 @@
       "bugs": [
         1578

[epoger, 2013/09/18 19:05:32]

For all these ignored tests, please replace the current "bugs" list with 1657,
to refer to http://code.google.com/p/skia/issues/detail?id=1657

[Stephen White, 2013/09/18 19:08:52]

Done.

       ], 
+      "ignore-failure": true, 
       "reviewed-by-human": false
     }, 
     "nested_aa_565.png": {
@@ -14907,4 +14908,4 @@
       "reviewed-by-human": false
     }
   }
-}
+}