Move routing token out of AndroidOverlay config.

media/base/android/android_overlay.h

Index: media/base/android/android_overlay.h
diff --git a/media/base/android/android_overlay.h b/media/base/android/android_overlay.h
index 24201f10a9d0c0578c3062742244c0da4498d676..bc60356745ea88f50e05516c59fb3624ccc9204b 100644
--- a/media/base/android/android_overlay.h
+++ b/media/base/android/android_overlay.h
@@ -8,7 +8,6 @@
 #include "base/android/scoped_java_ref.h"
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/unguessable_token.h"
 #include "media/base/media_export.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gl/android/scoped_java_surface.h"
@@ -55,9 +54,6 @@ class MEDIA_EXPORT AndroidOverlay {
     Config(const Config&);
     ~Config();
 
-    // Implementation-specific token.
-    base::UnguessableToken routing_token;
-
     gfx::Rect rect;
 
     ReadyCB ready_cb;