Remove GridLayout::SetInsets in favor of an empty border on the host.

mash/catalog_viewer/catalog_viewer.cc

Index: mash/catalog_viewer/catalog_viewer.cc
diff --git a/mash/catalog_viewer/catalog_viewer.cc b/mash/catalog_viewer/catalog_viewer.cc
index a79a45c937231733cf3eb14affa5fce26b99f684..996a561b8078ab8a75de85877f48b31827693c15 100644
--- a/mash/catalog_viewer/catalog_viewer.cc
+++ b/mash/catalog_viewer/catalog_viewer.cc
@@ -47,11 +47,11 @@ class CatalogViewerContents : public views::WidgetDelegateView,
         table_view_parent_(nullptr),
         observer_(nullptr),
         capability_(new views::Textfield) {
-    const int kPadding = 5;
+    constexpr int kPadding = 5;
+    SetBorder(views::CreateEmptyBorder(gfx::Insets(kPadding)));
     set_background(views::Background::CreateStandardPanelBackground());
 
     views::GridLayout* layout = new views::GridLayout(this);
-    layout->SetInsets(kPadding, kPadding, kPadding, kPadding);
     SetLayoutManager(layout);
 
     views::ColumnSet* columns = layout->AddColumnSet(0);