Disable youtube on v8.browsing-mobile and v8.browsing-mobile-future.

Bug: chromium:799080, chromium:804828
Change-Id: Ia53c46840b47086dd55f989d190b063af54eb2a4
Reviewed-on: https://chromium-review.googlesource.com/892442Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532915}

tools/perf/expectations.config

@@ -324,6 +324,7 @@ crbug.com/708300 [ Mobile ] v8.browsing_mobile/browse:shopping:flipkart [ Skip ]
 [ Android_Webview ] v8.browsing_mobile/browse:chrome:newtab [ Skip ]
 crbug.com/803465 [ Nexus_5 ] v8.browsing_mobile/browse:chrome:newtab [ Skip ]
 crbug.com/803870 [ Cherry_Mobile_Android_One ] v8.browsing_mobile/browse:social:tumblr_infinite_scroll [ Skip ]
+crbug.com/803870 [ Cherry_Mobile_Android_One ] v8.browsing_mobile/browse:media:youtube [ Skip ]
 crbug.com/799080 [ Nexus_7 ] v8.browsing_mobile-future/browse:news:cnn [ Skip ]
 
 # Benchmark: v8.browsing_mobile-future
@@ -336,6 +337,7 @@ crbug.com/767970 [ Cherry_Mobile_Android_One ] v8.browsing_mobile-future/browse:
 [ Android_Webview ] v8.browsing_mobile-future/browse:chrome:omnibox [ Skip ]
 crbug.com/728081 [ Android ] v8.browsing_mobile-future/browse:news:toi [ Skip ]
 crbug.com/767970 [ Cherry_Mobile_Android_One ] v8.browsing_mobile-future/browse:news:cnn [ Skip ]
+crbug.com/803870 [ Cherry_Mobile_Android_One ] v8.browsing_mobile-future/browse:media:youtube [ Skip ]
 crbug.com/767970 [ Mobile ] v8.browsing_mobile-future/browse:shopping:flipkart [ Skip ]
 crbug.com/708300 [ Mobile ] v8.browsing_mobile-future/browse:shopping:flipkart [ Skip ]
 [ Android_Webview ] v8.browsing_mobile-future/browse:chrome:newtab [ Skip ]