Disble blink_perf.accessibility/build-table.html on nexus5x webview.

This is failing consistently since being added so disabling and will
assign to benchmark owner.

Bug: 1114112
Change-Id: Ib58444d46f5ee43f0cc55f6298c6aa02119c77d6
No-Try: True
TBR: johnchen@chromium.org
CC: dmazzoni@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2341641Reviewed-by: Stephen Nusko <nuskos@chromium.org>
Commit-Queue: Stephen Nusko <nuskos@chromium.org>
Auto-Submit: Stephen Nusko <nuskos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795866}

tools/perf/expectations.config

@@ -11,6 +11,9 @@
 # results: [ Skip ]
 # conflicts_allowed: True
 
+# Benchmark: blink_perf.accessibility
+crbug.com/1114112 [ android-nexus-5x android-webview ] blink_perf.accessibility/build-table.html [ Skip ]
+
 # Benchmark: blink_perf.bindings
 crbug.com/882881 [ android-nexus-5 ] blink_perf.bindings/structured-clone-json-deserialize.html [ Skip ]
 crbug.com/910207 [ android-nexus-5x ] blink_perf.bindings/structured-clone-json-deserialize.html [ Skip ]