use the right NativeTheme on bubbles + dialogs on Aura Linux

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
index efd24b6b76c207d9bc331f412f99a784cd8bafe2..0b39b01e01f6b01177341cfb47508af57f141302 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
@@ -1632,7 +1632,7 @@ DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
 ui::NativeTheme* DesktopWindowTreeHost::GetNativeTheme(aura::Window* window) {
   const views::LinuxUI* linux_ui = views::LinuxUI::instance();
   if (linux_ui) {
-    ui::NativeTheme* native_theme = linux_ui->GetNativeTheme();
+    ui::NativeTheme* native_theme = linux_ui->GetNativeTheme(window);
     if (native_theme)
       return native_theme;
   }