aura-mus: Remove dead code.

chrome/browser/ui/views/chrome_web_dialog_view.cc

Index: chrome/browser/ui/views/chrome_web_dialog_view.cc
diff --git a/chrome/browser/ui/views/chrome_web_dialog_view.cc b/chrome/browser/ui/views/chrome_web_dialog_view.cc
index 93a3eec2c366cbc943edce2d2a4a5f3b24efc71d..14cc279c4b179a514848ed653e3387e20ba086b1 100644
--- a/chrome/browser/ui/views/chrome_web_dialog_view.cc
+++ b/chrome/browser/ui/views/chrome_web_dialog_view.cc
@@ -14,7 +14,6 @@
 #include "chrome/browser/ui/ash/ash_util.h"
 #include "services/ui/public/cpp/property_type_converters.h"
 #include "services/ui/public/interfaces/window_manager.mojom.h"
-#include "ui/aura/mus/mus_util.h"
 #endif  // defined(USE_ASH)
 
 namespace chrome {
@@ -47,10 +46,6 @@ gfx::NativeWindow ShowWebDialog(gfx::NativeView parent,
   // NOTE: The |parent| may be null, which will result in the default window
   // placement on Aura.
   params.parent = parent;
-#if defined(USE_ASH)
-  if (chrome::IsRunningInMash())
-    params.parent_mus = aura::GetMusWindow(parent);
-#endif  // defined(USE_ASH)
   return ShowWebDialogWidget(params, view);
 }