Enable Android WebView perf tests.

Android WebView had the UseSurfaceLayerForVideo feature enabled
unintentionally which was causing a crash. This was fixed in
https://crbug.com/853832. Enable WebView perf tests that got disabled
due to the crash.

Bug: 853204
Change-Id: Ib678a48ec723f40a4ab3be72f6078cafcfc311c6
Reviewed-on: https://chromium-review.googlesource.com/1110018Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569284}

tools/perf/expectations.config

@@ -339,7 +339,6 @@ crbug.com/736147 [ Android_One ] system_health.common_mobile/browse:social:tumbl
 crbug.com/803461 [ Nexus_5 ] system_health.common_mobile/browse:chrome:newtab [ Skip ]
 crbug.com/842163 [ Android_One ] system_health.common_mobile/browse:social:facebook_infinite_scroll [ Skip ]
 crbug.com/842163 [ Android_One ] system_health.common_mobile/browse:social:pinterest_infinite_scroll [ Skip ]
-crbug.com/852840 [ Android_Webview ] system_health.common_mobile/browse:media:youtube [ Skip ]
 
 # Benchmark: system_health.memory_desktop
 crbug.com/728576 [ Mac ] system_health.memory_desktop/browse:news:cnn [ Skip ]
@@ -364,8 +363,6 @@ crbug.com/836447 [ ChromeOS ] system_health.memory_desktop/multitab:misc:typical
 crbug.com/799734 [ Win ] system_health.memory_desktop/browse:media:tumblr [ Skip ]
 
 # Benchmark: system_health.memory_mobile
-crbug.com/853190 [ Android_Webview ] system_health.memory_mobile/browse:media:youtube [ Skip ]
-crbug.com/853190 [ Android_Webview ] system_health.memory_mobile/browse:news:cnn [ Skip ]
 crbug.com/787001 [ Android_Webview ] system_health.memory_mobile/load:media:soundcloud [ Skip ]
 [ Android_Webview ] system_health.memory_mobile/browse:chrome:newtab [ Skip ]
 crbug.com/847786 [ Android_One ] system_health.memory_mobile/browse:chrome:newtab [ Skip ]
@@ -387,7 +384,6 @@ crbug.com/803462 [ Nexus_5 ] system_health.memory_mobile/browse:chrome:newtab [
 crbug.com/834905 [ Nexus_5 ] system_health.memory_mobile/browse:social:pinterest_infinite_scroll [ Skip ]
 crbug.com/842731 [ Android_One ] system_health.memory_mobile/background:news:nytimes [ Skip ]
 crbug.com/843547 [ Android_Go ] system_health.memory_mobile/background:news:nytimes [ Skip ]
-crbug.com/852840 [ Android_Webview ] system_health.memory_mobile/browse:media:youtube [ Skip ]
 crbug.com/852888 [ Nexus_5X ] system_health.memory_mobile/background:news:nytimes [ Skip ]
 
 # Benchmark: tab_switching.typical_25
@@ -477,8 +473,6 @@ crbug.com/768472 [ Android_One ] v8.browsing_mobile-future/browse:shopping:lazad
 crbug.com/767970 [ Android_One ] v8.browsing_mobile-future/browse:shopping:avito [ Skip ]
 crbug.com/803870 [ Android_One ] v8.browsing_mobile-future/browse:media:youtube [ Skip ]
 crbug.com/767970 [ Android_One ] v8.browsing_mobile-future/browse:news:cnn [ Skip ]
-crbug.com/853763 [ Android_Webview ] v8.browsing_mobile-future/browse:media:youtube [ Skip ]
-crbug.com/853763 [ Android_Webview ] v8.browsing_mobile-future/browse:news:cnn [ Skip ]
 [ Android_Webview ] v8.browsing_mobile-future/browse:chrome:omnibox [ Skip ]
 [ Android_Webview ] v8.browsing_mobile-future/browse:chrome:newtab [ Skip ]
 crbug.com/803465 [ Nexus_5 ] v8.browsing_mobile-future/browse:chrome:newtab [ Skip ]