Ignore GM dashing_gpu on Debug ANGLE

BUG=Skia:1844
R=robertphillips@google.com

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/72993002

git-svn-id: http://skia.googlecode.com/svn/trunk@12297 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Debug-ANGLE/expected-results.json b/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Debug-ANGLE/expected-results.json
index 147d9f4..2e26608 100644
--- a/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Debug-ANGLE/expected-results.json
+++ b/expectations/gm/Test-Win7-ShuttleA-HD2000-x86-Debug-ANGLE/expected-results.json
@@ -5661,9 +5661,10 @@
         ]
       ], 
       "bugs": [
-        1578
+        1844
       ], 
-      "reviewed-by-human": false
+      "ignore-failure": true, 
+      "reviewed-by-human": true
     }, 
     "dashing_pdf-poppler.png": {
       "allowed-digests": [