Replace scoped_ptr with std::unique_ptr in //ui

ui/ozone/platform/cast/surface_ozone_egl_cast.cc

Index: ui/ozone/platform/cast/surface_ozone_egl_cast.cc
diff --git a/ui/ozone/platform/cast/surface_ozone_egl_cast.cc b/ui/ozone/platform/cast/surface_ozone_egl_cast.cc
index d05c1f8c2a75772ec0fd18d77dc4abea3f51af4a..688140c26917e94c54bf8dbf2ffcb3bd89bd5fe2 100644
--- a/ui/ozone/platform/cast/surface_ozone_egl_cast.cc
+++ b/ui/ozone/platform/cast/surface_ozone_egl_cast.cc
@@ -34,7 +34,7 @@ bool SurfaceOzoneEglCast::ResizeNativeWindow(const gfx::Size& viewport_size) {
   return parent_->ResizeDisplay(viewport_size);
 }
 
-scoped_ptr<gfx::VSyncProvider> SurfaceOzoneEglCast::CreateVSyncProvider() {
+std::unique_ptr<gfx::VSyncProvider> SurfaceOzoneEglCast::CreateVSyncProvider() {
   return nullptr;
 }