Ozone DRM: Destroy MusThreadProxy last.

ui/ozone/platform/drm/ozone_platform_gbm.cc

Index: ui/ozone/platform/drm/ozone_platform_gbm.cc
diff --git a/ui/ozone/platform/drm/ozone_platform_gbm.cc b/ui/ozone/platform/drm/ozone_platform_gbm.cc
index 58c83ab4e7c7ede2f17d71fdda05b5e204aa8844..f94f1c8e983f888829a8cd808c4a7b995f030400 100644
--- a/ui/ozone/platform/drm/ozone_platform_gbm.cc
+++ b/ui/ozone/platform/drm/ozone_platform_gbm.cc
@@ -239,6 +239,9 @@ class OzonePlatformGbm
   bool using_mojo_;
   bool single_process_;
 
+  // Bridges the DRM, GPU and main threads in mus. This must be destroyed last.
+  std::unique_ptr<MusThreadProxy> mus_thread_proxy_;
+
   // Objects in the GPU process.
   std::unique_ptr<DrmThreadProxy> drm_thread_proxy_;
   std::unique_ptr<GlApiLoader> gl_api_loader_;
@@ -257,9 +260,6 @@ class OzonePlatformGbm
   std::unique_ptr<DrmDisplayHostManager> display_manager_;
   std::unique_ptr<DrmOverlayManager> overlay_manager_;
 
-  // Bridges the DRM, GPU and main threads in mus.
-  std::unique_ptr<MusThreadProxy> mus_thread_proxy_;
-
 #if BUILDFLAG(USE_XKBCOMMON)
   XkbEvdevCodes xkb_evdev_code_converter_;
 #endif