aura: Destroy the compositor before destroying the backing window.

ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc

Index: ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
diff --git a/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc b/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
index 71d690f918eccbe2b3b23f909b9f6516d8085537..5b1c88866007860e7ad910d866a170dd799211ac 100644
--- a/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
+++ b/ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc
@@ -142,7 +142,6 @@ DesktopWindowTreeHostX11::DesktopWindowTreeHostX11(
 }
 
 DesktopWindowTreeHostX11::~DesktopWindowTreeHostX11() {
-  DestroyCompositor();
   root_window_->window()->ClearProperty(kHostForRootWindow);
   aura::client::SetWindowMoveClient(root_window_->window(), NULL);
   desktop_native_widget_aura_->OnDesktopWindowTreeHostDestroyed(root_window_);
@@ -320,6 +319,11 @@ void DesktopWindowTreeHostX11::CloseNow() {
   desktop_native_widget_aura_->root_window_event_filter()->RemoveHandler(
       x11_window_event_filter_.get());
 
+  // Destroy the compositor before destroying the |xwindow_| since shutdown
+  // may try to swap, and the swap without a window causes an X error, which
+  // causes a crash with in-process renderer.
+  DestroyCompositor();
+
   open_windows().remove(xwindow_);
   // Actually free our native resources.
   base::MessagePumpX11::Current()->RemoveDispatcherForWindow(xwindow_);