Disabling blink_perf.bindings worker-structured-clone-serialize on A1

Many similar stories are already disabled on A1.

NOTRY=true
TBR=panicker@chromium.org

Bug: 764868
Change-Id: Iaccf98bdaf53bedbedfbe24169a5d577789ac1ab
Reviewed-on: https://chromium-review.googlesource.com/1164028Reviewed-by: Charlie Andrews <charliea@chromium.org>
Commit-Queue: Charlie Andrews <charliea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580967}

tools/perf/expectations.config

@@ -12,6 +12,7 @@ crbug.com/764868 [ Android_One ] blink_perf.bindings/structured-clone-long-strin
 crbug.com/764868 [ Android_One ] blink_perf.bindings/structured-clone-json-serialize.html [ Skip ]
 crbug.com/764868 [ Android_One ] blink_perf.bindings/structured-clone-long-string-serialize.html [ Skip ]
 crbug.com/764868 [ Android_One ] blink_perf.bindings/structured-clone-json-deserialize.html [ Skip ]
+crbug.com/764868 [ Android_One ] blink_perf.bindings/worker-structured-clone-json-serialize.html [ Skip ]
 
 # Benchmark: blink_perf.canvas
 crbug.com/593973 [ Android_Svelte ] blink_perf.canvas/* [ Skip ]