SurfaceAggregator should check whether output is secure when drawin

ui/views/mus/surface_context_factory.h

Index: ui/views/mus/surface_context_factory.h
diff --git a/ui/views/mus/surface_context_factory.h b/ui/views/mus/surface_context_factory.h
index f13611956f1d78060b536d795f27e9c7dadb63a6..61701e63e7491fac7416c195ac7728d49ac9f63a 100644
--- a/ui/views/mus/surface_context_factory.h
+++ b/ui/views/mus/surface_context_factory.h
@@ -53,6 +53,7 @@ class VIEWS_MUS_EXPORT SurfaceContextFactory : public ui::ContextFactory {
                      const gfx::Size& size) override;
   void SetAuthoritativeVSyncInterval(ui::Compositor* compositor,
                                      base::TimeDelta interval) override {}
+  void SetOutputIsSecure(ui::Compositor* compositor, bool secure) override {}
 
   SurfaceBinding surface_binding_;
   uint32_t next_surface_id_namespace_;