views::Separator cleanup.

chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc

Index: chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc
diff --git a/chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc b/chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc
index b79554d0fbd0eb61849405622a9bef3387c644d9..4a7487d786bbb09ea63d1a93294ce66ac97f8f70 100644
--- a/chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc
+++ b/chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc
@@ -138,8 +138,7 @@ void MediaGalleriesDialogViews::InitChildViews() {
 
     // Header and separator line.
     if (!section_headers[i].empty() && !entries.empty()) {
-      views::Separator* separator = new views::Separator(
-          views::Separator::HORIZONTAL);
+      views::Separator* separator = new views::Separator();
       scroll_container->AddChildView(separator);
 
       views::Label* header = new views::Label(section_headers[i]);