Mark accessibility/chromium-only-roles.html as failing.

It looks like this test needs to be rebaselined after the changes in
https://crrev.com/303364 are fully implemented.

BUG=384723
[email protected]

Review URL: https://codereview.chromium.org/708103003

git-svn-id: svn://svn.chromium.org/blink/trunk@185002 bbb929c8-8fbe-4397-9dbb-9b2b20218538
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index 8eb1afe..bc0a36d 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -1455,6 +1455,8 @@
 crbug.com/429133 [ SnowLeopard ] virtual/textblob/fast/text/splitText-dirty-lines.html [ Failure ]
 crbug.com/429133 [ SnowLeopard ] virtual/textblob/fast/text/text-combine-shrink-to-fit.html [ Failure ]
 
+crbug.com/384723 accessibility/chromium-only-roles.html [ Failure ]
+
 crbug.com/429843 [ Win7 Debug ] media/video-controls-with-cast-rendering.html [ Pass ImageOnlyFailure ]
 
 # crbug.com/429874: Win => Fail