linux_aura: Fix the insets on LabelButtons.

chrome/browser/ui/libgtk2ui/gtk2_border.h

Index: chrome/browser/ui/libgtk2ui/gtk2_border.h
diff --git a/chrome/browser/ui/libgtk2ui/gtk2_border.h b/chrome/browser/ui/libgtk2ui/gtk2_border.h
index 10e6663fe0d577eaa76fdc9e74460dac57af50b2..ca1fcd48b6aa36fe8c0600eae0ec6176d9113c79 100644
--- a/chrome/browser/ui/libgtk2ui/gtk2_border.h
+++ b/chrome/browser/ui/libgtk2ui/gtk2_border.h
@@ -28,7 +28,8 @@ class Gtk2UI;
 class Gtk2Border : public views::Border, public ui::NativeThemeObserver {
  public:
   Gtk2Border(Gtk2UI* gtk2_ui,
-             views::LabelButton* owning_button);
+             views::LabelButton* owning_button,
+             scoped_ptr<views::Border> border);
   virtual ~Gtk2Border();
 
   // Overridden from views::Border:
@@ -55,6 +56,10 @@ class Gtk2Border : public views::Border, public ui::NativeThemeObserver {
   // force invalidate the layout on theme changes.
   views::LabelButton* owning_button_;
 
+  // The views::Border that we are replacing in native mode. We keep track of
+  // this for inset information.
+  scoped_ptr<views::Border> border_;
+
   ScopedObserver<ui::NativeTheme, ui::NativeThemeObserver> observer_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(Gtk2Border);