Remove autocheckout code.

chrome/browser/ui/autofill/autocheckout_bubble.h

-// 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_AUTOFILL_AUTOCHECKOUT_BUBBLE_H_
-#define CHROME_BROWSER_UI_AUTOFILL_AUTOCHECKOUT_BUBBLE_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-
-namespace autofill {
-
-class AutocheckoutBubbleController;
-
-class AutocheckoutBubble : public base::SupportsWeakPtr<AutocheckoutBubble> {
- public:
-  virtual ~AutocheckoutBubble();
-
-  // Show the Autocheckout bubble.
-  virtual void ShowBubble() = 0;
-
-  // Hide the Autocheckout bubble.
-  virtual void HideBubble() = 0;
-
-  // Creates the Autocheckout bubble. The returned bubble owns itself.
-  static base::WeakPtr<AutocheckoutBubble> Create(
-      scoped_ptr<AutocheckoutBubbleController> controller);
-};
-
-}  // namespace autofill
-
-#endif  // CHROME_BROWSER_UI_AUTOFILL_AUTOCHECKOUT_BUBBLE_H_