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

ui/message_center/views/message_center_button_bar.cc

Index: ui/message_center/views/message_center_button_bar.cc
diff --git a/ui/message_center/views/message_center_button_bar.cc b/ui/message_center/views/message_center_button_bar.cc
index 14f2283a0ba446d7d9f80a354903d614bd52d0d5..ffecc3d08e587c871a2f3b08719b1b1dbd15f9ad 100644
--- a/ui/message_center/views/message_center_button_bar.cc
+++ b/ui/message_center/views/message_center_button_bar.cc
@@ -17,6 +17,7 @@
 #include "ui/message_center/views/message_center_view.h"
 #include "ui/resources/grit/ui_resources.h"
 #include "ui/strings/grit/ui_strings.h"
+#include "ui/views/border.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/button/label_button.h"
@@ -31,12 +32,7 @@
 namespace message_center {
 
 namespace {
-const int kButtonSize = 40;
-const int kLeftPaddingWidthForNonArrows = 16;
-const int kFooterTopMargin = 6;
-const int kFooterBottomMargin = 3;
-const int kFooterLeftMargin = 4;
-const int kFooterRightMargin = 14;
+constexpr int kButtonSize = 40;
 }  // namespace
 
 // NotificationCenterButton ////////////////////////////////////////////////////
@@ -194,12 +190,15 @@ void MessageCenterButtonBar::ViewVisibilityChanged() {
       ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
           IDR_NOTIFICATION_SETTINGS);
   int image_margin = std::max(0, (kButtonSize - settings_image->width()) / 2);
+  constexpr int kFooterTopMargin = 6;
+  constexpr int kFooterLeftMargin = 4;
+  constexpr int kFooterBottomMargin = 3;
+  constexpr int kFooterRightMargin = 14;
+  SetBorder(views::CreateEmptyBorder(
+      kFooterTopMargin, kFooterLeftMargin, kFooterBottomMargin,
+      std::max(0, kFooterRightMargin - image_margin)));
   views::GridLayout* layout = new views::GridLayout(this);
   SetLayoutManager(layout);
-  layout->SetInsets(kFooterTopMargin,
-                    kFooterLeftMargin,
-                    kFooterBottomMargin,
-                    std::max(0, kFooterRightMargin - image_margin));
   views::ColumnSet* column = layout->AddColumnSet(0);
   if (title_arrow_->visible()) {
     // Column for the left-arrow used to back out of settings.
@@ -210,6 +209,7 @@ void MessageCenterButtonBar::ViewVisibilityChanged() {
                       kButtonSize,
                       0);
   } else {
+    constexpr int kLeftPaddingWidthForNonArrows = 16;
     column->AddPaddingColumn(0.0f, kLeftPaddingWidthForNonArrows);
   }