Enable rotate style visibility animation for new style web contents modal dialog

chrome/browser/ui/views/web_contents_modal_dialog_manager_views.cc

Index: chrome/browser/ui/views/web_contents_modal_dialog_manager_views.cc
diff --git a/chrome/browser/ui/views/web_contents_modal_dialog_manager_views.cc b/chrome/browser/ui/views/web_contents_modal_dialog_manager_views.cc
index 1821634680df3c972523329f1d02c8891e7fa604..04b699c1425df912acff5a8c59deb90b6ab0bb36 100644
--- a/chrome/browser/ui/views/web_contents_modal_dialog_manager_views.cc
+++ b/chrome/browser/ui/views/web_contents_modal_dialog_manager_views.cc
@@ -11,6 +11,7 @@
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/views/widget/widget_observer.h"
+#include "ui/views/window/dialog_delegate.h"
 
 #if defined(USE_AURA)
 #include "ui/aura/client/aura_constants.h"
@@ -56,6 +57,12 @@ class NativeWebContentsModalDialogManagerViews
     // TODO(wittman): remove once the new visual style is complete
     widget->GetNativeWindow()->SetProperty(aura::client::kConstrainedWindowKey,
                                            true);
+
+    if (views::DialogDelegate::UseNewStyle()) {
+      views::corewm::SetWindowVisibilityAnimationType(
+          widget->GetNativeWindow(),
+          views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_ROTATE);
+    }
 #endif
 
 #if defined(USE_ASH)