Suppress timed out test (browse:news:washingtonpost)

Skip system_health.memory_mobile/browse:news:washingtonpost:2019 to prevent time out on android-go

TBR=jonross@chromium.org

Bug: 1129885
Change-Id: I8c6a6dd0e17a2256a0acee15d60dc8a9b154bd5d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2418321Reviewed-by: Behdad Bakhshinategh <behdadb@chromium.org>
Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: Behdad Bakhshinategh <behdadb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#808488}

tools/perf/expectations.config

@@ -380,6 +380,7 @@ crbug.com/1112337 [ android ] system_health.memory_mobile/browse:news:cricbuzz:2
 crbug.com/1113921 [ android-go ] system_health.memory_mobile/load:tools:dropbox:2019 [ Skip ]
 crbug.com/1128019 [ android-pixel-2 ] system_health.memory_mobile/load:tools:dropbox:2019 [ Skip ]
 crbug.com/1128019 [ android-nexus-5x ] system_health.memory_mobile/load:tools:dropbox:2019 [ Skip ]
+crbug.com/1129885 [ android-go ] system_health.memory_mobile/browse:news:washingtonpost:2019 [ Skip ]
 
 # Benchmark: tab_switching.typical_25
 crbug.com/747026 [ mac ] tab_switching.typical_25/multitab:misc:typical24 [ Skip ]