[Mac] The infobar's top arrow should be hidden while the omnibox popup is shown

chrome/browser/ui/infobar_container_delegate.cc

Index: chrome/browser/ui/infobar_container_delegate.cc
diff --git a/chrome/browser/ui/infobar_container_delegate.cc b/chrome/browser/ui/infobar_container_delegate.cc
index 866557653ae8fe86f104719bb837d42246dc7d7f..ad00dd4504e11b508f997165357454de82a6a5cd 100644
--- a/chrome/browser/ui/infobar_container_delegate.cc
+++ b/chrome/browser/ui/infobar_container_delegate.cc
@@ -70,6 +70,10 @@ void InfoBarContainerDelegate::SetMaxTopArrowHeight(
   container->UpdateInfoBarArrowTargetHeights();
 }
 
+int InfoBarContainerDelegate::DefaultMaxTopArrowHeight() const {
+  return GetDefaultArrowTargetHeight();
+}
+
 int InfoBarContainerDelegate::ArrowTargetHeightForInfoBar(
     size_t index,
     const gfx::SlideAnimation& animation) const {