WMPI: Add base::Feature for disabling SurfaceViews.

media/blink/webmediaplayer_impl.h

Index: media/blink/webmediaplayer_impl.h
diff --git a/media/blink/webmediaplayer_impl.h b/media/blink/webmediaplayer_impl.h
index 7c3da6389a8cadf684fc1fc93365e2a2f8730588..8caca443c13acb0853967b6fd39a56ac9aaf3094 100644
--- a/media/blink/webmediaplayer_impl.h
+++ b/media/blink/webmediaplayer_impl.h
@@ -521,6 +521,9 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   // Force to use SurfaceView instead of SurfaceTexture on Android.
   bool force_video_overlays_;
 
+  // Prevent use of SurfaceView on Android.
+  bool disable_video_overlays_;
+
   // Suppresses calls to OnPipelineError() after destruction / shutdown has been
   // started; prevents us from spuriously logging errors that are transient or
   // unimportant.