Support subtitles for native fullscreen video

LayoutTests/TestExpectations

Index: LayoutTests/TestExpectations
diff --git a/LayoutTests/TestExpectations b/LayoutTests/TestExpectations
index a6cba6783cdcb7616dbd1f97aa71016c8b0774db..e559b6bb3df1cf70822c059ea4c6bfb697d5ff14 100644
--- a/LayoutTests/TestExpectations
+++ b/LayoutTests/TestExpectations
@@ -1278,3 +1278,10 @@ crbug.com/276769 http/tests/security/contentSecurityPolicy/source-list-parsing-n
 crbug.com/286081 inspector/debugger/long-resume-vs-reload.html [ Failure Pass Timeout ]
 crbug.com/285703 [ Debug ] fast/table/table-rowspan-crash-with-huge-rowspan-cells.html [ Crash Pass ]
 crbug.com/286287 http/tests/inspector/network/network-initiator.html [ Failure Pass ]
+
+# Android virtual suite shares the same expectation.
+crbug.com/100798 [ Debug ] virtual/android/fullscreen/full-screen-iframe-allowed.html [ Failure Pass ]
+crbug.com/100798 [ Debug ] virtual/android/fullscreen/full-screen-iframe-allowed-prefixed.html [ Failure Pass ]
+webkit.org/b/90704 virtual/android/fullscreen/exit-full-screen-iframe.html [ Failure Pass ]
+crbug.com/243782 virtual/android/fullscreen/full-screen-remove-ancestor.html [ Pass Timeout ]
+crbug.com/246077 virtual/android/fullscreen/full-screen-render-inline.html [ ImageOnlyFailure ]