Revert of BubbleFrameView: add top padding even when close button is hidden

chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_container.cc

Index: chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_container.cc
diff --git a/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_container.cc b/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_container.cc
index 69e07b939b0b29b3082e545ae38211ee24073de8..487df5f782be292f799f2736f60cbcead98877d4 100644
--- a/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_container.cc
+++ b/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_container.cc
@@ -19,7 +19,7 @@
 #include "ui/views/border.h"
 #include "ui/views/bubble/bubble_border.h"
 #include "ui/views/bubble/bubble_frame_view.h"
-#include "ui/views/controls/button/image_button.h"
+#include "ui/views/controls/button/label_button.h"
 #include "ui/views/layout/fill_layout.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/client_view.h"
@@ -168,7 +168,7 @@
     }
   }
 
-  views::ImageButton* close_button_;
+  views::LabelButton* close_button_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListDialogContainer);
 };