Disable media.mobile/video.html on Android

NOTRY=true
TBR=perezju@chromium.org
CC=johnchen@chromium.org,crouleau@chromium.org
BUG=859175

Change-Id: I9fe4d4d5f2b28c13b8840a0a8c1b4567f1512512
Reviewed-on: https://chromium-review.googlesource.com/1125060Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Commit-Queue: Sami Kyöstilä <skyostil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572532}

tools/perf/expectations.config

@@ -307,6 +307,9 @@ crbug.com/747026 [ Mac ] tab_switching.typical_25/multitab:misc:typical24 [ Skip
 # Benchmark: media.desktop
 crbug.com/859660 [ All ] media.desktop/video.html?src=tulip2.vp9.webm_Regular-3G [ Skip ]
 
+# Benchmark: media.mobile
+crbug.com/859175 [ Android ] media.mobile/video.html?src=tulip2.vp9.webm_Regular-3G [ Skip ]
+
 # Benchmark: v8.browsing_desktop
 crbug.com/773084 [ Mac ] v8.browsing_desktop/browse:tools:maps [ Skip ]
 crbug.com/788796 [ Linux ] v8.browsing_desktop/browse:media:imgur [ Skip ]