Remove the old views bubble code.

chrome/browser/ui/views/bubble/border_contents.h

-// Copyright (c) 2011 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_BUBBLE_BORDER_CONTENTS_H_
-#define CHROME_BROWSER_UI_VIEWS_BUBBLE_BORDER_CONTENTS_H_
-#pragma once
-
-#include "ui/views/bubble/border_contents_view.h"
-
-// This is used to paint the border of the Bubble. Windows uses this via
-// BorderWidgetWin, while others can use it directly in the bubble.
-class BorderContents : public views::BorderContentsView {
- public:
-  BorderContents();
-
- protected:
-  virtual ~BorderContents() { }
-
-  // views::BorderContentsView overrides:
-  virtual gfx::Rect GetMonitorBounds(const gfx::Rect& rect) OVERRIDE;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BorderContents);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_BUBBLE_BORDER_CONTENTS_H_