Ignore failures in gradtext_pdf-mac GM tests
BUG=skia:476
TBR=edisonn
(SkipBuildbotRuns)

Review URL: https://codereview.chromium.org/23989002

git-svn-id: http://skia.googlecode.com/svn/trunk@11105 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json b/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json
index 1b3fb8a..00f3892 100644
--- a/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json
+++ b/expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json
@@ -8011,7 +8011,10 @@
           7961471823724588641
         ]
       ], 
-      "ignore-failure": false
+      "bugs": [
+        476
+      ], 
+      "ignore-failure": true
     }, 
     "gradtext_pdf-poppler.png": {
       "allowed-digests": [