fix GridLayout::CreatePanel for new style dialogs

ui/views/window/dialog_client_view.cc

Index: ui/views/window/dialog_client_view.cc
diff --git a/ui/views/window/dialog_client_view.cc b/ui/views/window/dialog_client_view.cc
index a9862927f04cac3102bc9db972e81d6a632b7d1d..fdc6c53328c1c6aee130fcb98a518054c0cec555 100644
--- a/ui/views/window/dialog_client_view.cc
+++ b/ui/views/window/dialog_client_view.cc
@@ -372,7 +372,8 @@ gfx::Insets DialogClientView::GetButtonRowInsets() const {
 
   // NOTE: The insets only apply to the buttons, extra view, and footnote view.
   return DialogDelegate::UseNewStyle() ?
-      gfx::Insets(0, 20, 20, 20) :
+      gfx::Insets(0, kButtonHEdgeMarginNew,
+                  kButtonVEdgeMarginNew, kButtonHEdgeMarginNew) :
       gfx::Insets(0, kButtonHEdgeMargin,
                   kButtonVEdgeMargin, kButtonHEdgeMargin);
 }