Convert //components/mus from scoped_ptr to std::unique_ptr

components/mus/public/cpp/lib/output_surface.cc

Index: components/mus/public/cpp/lib/output_surface.cc
diff --git a/components/mus/public/cpp/lib/output_surface.cc b/components/mus/public/cpp/lib/output_surface.cc
index f5f0469fbabe03d6a9fa8ecaf81676a57256d32f..68f98f32e71245c1a296fce40e0bef1b962c38be 100644
--- a/components/mus/public/cpp/lib/output_surface.cc
+++ b/components/mus/public/cpp/lib/output_surface.cc
@@ -15,7 +15,7 @@ namespace mus {
 
 OutputSurface::OutputSurface(
     const scoped_refptr<cc::ContextProvider>& context_provider,
-    scoped_ptr<mus::WindowSurface> surface)
+    std::unique_ptr<mus::WindowSurface> surface)
     : cc::OutputSurface(context_provider), surface_(std::move(surface)) {
   capabilities_.delegated_rendering = true;
 }