Send AndroidOverlay routing token from WMPI to AVDA.

media/base/media_switches.cc

Index: media/base/media_switches.cc
diff --git a/media/base/media_switches.cc b/media/base/media_switches.cc
index b6de64a285451dbb1d39eb7584665a534616af51..3e7c0b0d0ab6b1a07add08156ee50125c67de6c2 100644
--- a/media/base/media_switches.cc
+++ b/media/base/media_switches.cc
@@ -182,6 +182,10 @@ const base::Feature kResumeBackgroundVideo {
 #endif
 };
 
+// Use AndroidOverlay rather than ContentVideoView in clank?
+const base::Feature kUseAndroidOverlay{"use-android_overlay",
+                                       base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Let video track be unselected when video is playing in the background.
 const base::Feature kBackgroundVideoTrackOptimization{
     "BackgroundVideoTrackOptimization", base::FEATURE_DISABLED_BY_DEFAULT};