[Sheriff] Mark virtual/text-antialias/color-emoji.html as failing on Retina

TBR=joelhockey@chromium.org

No-Try: true
Bug: 1093203
Change-Id: I3e2c5d9b4f76d21649a2a306327258c922cbba25
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2239131Reviewed-by: Kunihiko Sakamoto <ksakamoto@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Commit-Queue: Kunihiko Sakamoto <ksakamoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776852}

third_party/blink/web_tests/TestExpectations

@@ -6748,3 +6748,6 @@ crbug.com/1091843 fast/canvas/color-space/canvas-createImageBitmap-p3.html [ Pas
 crbug.com/1092813 [ Retina ] virtual/text-antialias/emoticons.html [ Pass Failure ]
 crbug.com/1090180 virtual/gpu/fast/canvas/canvas-gpu-consistency.html [ Failure ]
 crbug.com/1093003 [ Mac ] external/wpt/html/rendering/replaced-elements/embedded-content/cross-domain-iframe.sub.html [ Pass Failure ]
+
+# Sheriff 2020-06-10
+crbug.com/1093203 [ Retina ] virtual/text-antialias/color-emoji.html [ Pass Failure ]