Remove unnecessary Border subclasses where we can achieve the same functionality

chrome/browser/ui/views/infobars/infobar_label_button_border.h

Index: chrome/browser/ui/views/infobars/infobar_label_button_border.h
===================================================================
--- chrome/browser/ui/views/infobars/infobar_label_button_border.h	(revision 236651)
+++ chrome/browser/ui/views/infobars/infobar_label_button_border.h	(working copy)
@@ -1,25 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_LABEL_BUTTON_BORDER_H_
-#define CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_LABEL_BUTTON_BORDER_H_
-
-#include "ui/views/controls/button/label_button_border.h"
-
-// A LabelButtonBorder that is dark and also paints the button frame in the
-// normal state.
-class InfoBarLabelButtonBorder : public views::LabelButtonBorder {
- public:
-  InfoBarLabelButtonBorder();
-
- private:
-  virtual ~InfoBarLabelButtonBorder();
-
-  // Overridden from views::LabelButtonBorder:
-  virtual gfx::Insets GetInsets() const OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(InfoBarLabelButtonBorder);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_LABEL_BUTTON_BORDER_H_