Re-enable load:tools:drive on Android.

Bug: 738854
Change-Id: If29018f3125540bd3abe15f46b5a13994215066b
TBR: tdresser@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/1174633
Commit-Queue: Annie Sullivan <sullivan@chromium.org>
Reviewed-by: Annie Sullivan <sullivan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584463}

tools/perf/expectations.config

@@ -197,8 +197,6 @@ crbug.com/846022 [ Linux ] system_health.common_desktop/browse:social:twitter_in
 crbug.com/714650 [ Android ] system_health.common_mobile/browse:news:globo [ Skip ]
 crbug.com/787001 [ Android_Webview ] system_health.common_mobile/load:media:soundcloud [ Skip ]
 crbug.com/708300 [ Android ] system_health.common_mobile/browse:shopping:flipkart [ Skip ]
-crbug.com/738854 [ Nexus_5X ] system_health.common_mobile/load:tools:drive [ Skip ]
-crbug.com/738854 [ Android_Webview ] system_health.common_mobile/load:tools:drive [ Skip ]
 crbug.com/865400 [ Pixel_2 ] system_health.common_mobile/background:news:nytimes [ Skip ]
 
 # Benchmark: system_health.memory_desktop