Revert "Disable flaky...

Revert "Disable flaky SystemHealthBenchmarkSmokeTest.system_health.memory_desktop/play:media:soundcloud:2018"

This reverts commit e955ed2d.

Reason for revert: Attempt to gain more debug information.

Sheriffs: Please do revert this CL if flakiness reoccurs.

Original change's description:
> Disable flaky SystemHealthBenchmarkSmokeTest.system_health.memory_desktop/play:media:soundcloud:2018
>
> TBR=perezju@chromium.org
>
> Bug: 987858
> Change-Id: I7dbd4dc300f38c9aacad4a214a6618c8120e0dd5
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1722578
> Reviewed-by: Rakina Zata Amni <rakina@chromium.org>
> Commit-Queue: Rakina Zata Amni <rakina@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#681723}

TBR=perezju@chromium.org,rakina@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

TBR=crouleau@chromium.org

Bug: 987858
Change-Id: I805d54768ca7eb571bef2bb0602fae8898d0236b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1872101
Commit-Queue: Juan Antonio Navarro Pérez <perezju@chromium.org>
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708197}

tools/perf/benchmarks/system_health_smoke_test.py

@@ -89,10 +89,6 @@ _DISABLED_TESTS = frozenset({
   # crbug.com/769263
   'system_health.memory_desktop/play:media:soundcloud',
 
-  # crbug.com/987858
-  'system_health.memory_desktop/play:media:soundcloud:2018',
-
-
   # crbug.com/
   'system_health.memory_desktop/browse:news:nytimes',