[Perf] Re-enable v8.browsing_mobile_future now there is capacity.

BUG=chromium:878390

Change-Id: I0a5dd1e09f42a0332fd107cdecb677d499d4cef6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2020769
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Caleb Rouleau <crouleau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738669}

tools/perf/expectations.config

@@ -389,9 +389,6 @@ crbug.com/1039801 [ android-webview ] v8.browsing_mobile/browse:social:pinterest
 
 
 # Benchmark: v8.browsing_mobile-future
-# Disabled v8.browsing_mobile-future for capacity reasons while we update
-# mobile benchmarks to 2019. Re-enable once the original benchmarks are removed.
-crbug.com/878390 [ android ] v8.browsing_mobile-future/* [ Skip ]
 crbug.com/1036141 [ android-webview ] v8.browsing_mobile-future/browse:shopping:lazada:2019 [ Skip ]
 crbug.com/1036143 [ android-pixel-2 ] v8.browsing_mobile-future/browse:chrome:omnibox:2019 [ Skip ]