perf: Disable imgur:2019 on Android Go

NOTRY=true
TBR=wenbinzhang@google.com

Bug: 1064650
Change-Id: Ie0cb4a4f936cb3fedd8b5a97247f6f387e1b93e1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2120502Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Commit-Queue: Sami Kyöstilä <skyostil@chromium.org>
Auto-Submit: Sami Kyöstilä <skyostil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753309}

tools/perf/expectations.config

@@ -311,6 +311,7 @@ crbug.com/1064281 [ linux ] system_health.common_desktop/long_running:tools:gmai
 
 # Benchmark: system_health.common_mobile
 crbug.com/1007355 [ android-go android-webview ] system_health.common_mobile/load:media:imgur:2018 [ Skip ]
+crbug.com/1064650 [ android-go ] system_health.common_mobile/browse:media:imgur:2019 [ Skip ]
 crbug.com/877648 [ android ] system_health.common_mobile/long_running:tools:gmail-background [ Skip ]
 crbug.com/877648 [ android ] system_health.common_mobile/long_running:tools:gmail-foreground [ Skip ]
 crbug.com/923527 [ android-webview ] system_health.common_mobile/load:media:soundcloud:2018 [ Skip ]