Revert 148383 - Move the keyboard overlay view to ash.

ash/keyboard_overlay/keyboard_overlay_view.h

-// Copyright (c) 2012 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 ASH_KEYBOARD_OVERLAY_KEYBOARD_OVERLAY_VIEW_H_
-#define ASH_KEYBOARD_OVERLAY_KEYBOARD_OVERLAY_VIEW_H_
-
-#include "ash/ash_export.h"
-#include "base/compiler_specific.h"
-#include "ui/views/controls/webview/web_dialog_view.h"
-
-class GURL;
-
-namespace content {
-class BrowserContext;
-}
-
-namespace ui {
-class WebDialogDelegate;
-}
-
-// A customized dialog view for the keyboard overlay.
-class ASH_EXPORT KeyboardOverlayView : public views::WebDialogView {
- public:
-  KeyboardOverlayView(content::BrowserContext* context,
-                      ui::WebDialogDelegate* delegate,
-                      WebContentsHandler* handler);
-  virtual ~KeyboardOverlayView();
-
-  // Shows the keyboard overlay.
-  static void ShowDialog(content::BrowserContext* context,
-                         WebContentsHandler* handler,
-                         const GURL& url);
-
- private:
-  // Overridden from views::WidgetDelegate:
-  virtual void WindowClosing() OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(KeyboardOverlayView);
-};
-
-#endif  // ASH_KEYBOARD_OVERLAY_KEYBOARD_OVERLAY_VIEW_H_