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diff --git a/ceee/ie/plugin/bho/infobar_window.h b/ceee/ie/plugin/bho/infobar_window.h
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+++ b/ceee/ie/plugin/bho/infobar_window.h
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+// Copyright (c) 2010 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.
+//
+// @file
+// Infobar window.
+
+#ifndef CEEE_IE_PLUGIN_BHO_INFOBAR_WINDOW_H_
+#define CEEE_IE_PLUGIN_BHO_INFOBAR_WINDOW_H_
+
+#include <atlbase.h>
+#include <atlapp.h>  // Must be included AFTER base.
+#include <atlcrack.h>
+#include <atlgdi.h>
+#include <atlmisc.h>
+#include <atlwin.h>
+
+#include "base/singleton.h"
+#include "base/scoped_ptr.h"
+#include "ceee/ie/plugin/bho/infobar_browser_window.h"
+
+namespace infobar_api {
+
+enum InfobarType {
+  FIRST_INFOBAR_TYPE = 0,
+  TOP_INFOBAR = 0,          // Infobar at the top.
+  BOTTOM_INFOBAR = 1,       // Infobar at the bottom.
+  END_OF_INFOBAR_TYPE = 2
+};
+
+// InfobarWindow is the window created on the top or bottom of the browser tab
+// window that contains the web browser window.
+class InfobarWindow : public InfobarBrowserWindow::Delegate,
+                      public CWindowImpl<InfobarWindow, CWindow> {
+ public:
+  class Delegate {
+   public:
+    virtual ~Delegate() {}
+    // Returns the window handle for the HTML container window.
+    virtual HWND GetContainerWindow() = 0;
+    // Informs about window.close() event.
+    virtual void OnWindowClose(InfobarType type) = 0;
+  };
+
+  static InfobarWindow* CreateInfobar(InfobarType type, Delegate* delegate);
+  ~InfobarWindow();
+
+  // Implementation of InfobarBrowserWindow::Delegate.
+  // Informs about window.close() event.
+  virtual void OnWindowClose();
+
+  // Shows the infobar.
+  // NOTE: Navigate should be called before Show.
+  // The height of the infobar is calculated to fit the content (limited to
+  // max_height if the content is too high; no limit if max_height is set to
+  // 0).
+  // slide indicates whether to show sliding effect.
+  HRESULT Show(int max_height, bool slide);
+
+  // Hides the infobar.
+  HRESULT Hide();
+
+  // Navigates the HTML view of the infobar.
+  HRESULT Navigate(const std::wstring& url);
+
+  // Reserves space for the infobar when IE window recalculates its size.
+  void ReserveSpace(RECT* rect);
+
+  // Updates the infobar size and position when IE content window size or
+  // position is changed.
+  void UpdatePosition();
+
+  // Destroys the browser window.
+  void Reset();
+
+ private:
+  BEGIN_MSG_MAP(InfobarWindow)
+    MSG_WM_TIMER(OnTimer);
+    MSG_WM_CREATE(OnCreate)
+    MSG_WM_PAINT(OnPaint)
+    MSG_WM_SIZE(OnSize)
+  END_MSG_MAP()
+
+  // Type of the infobar - whether it is displayed at the top or at the bottom
+  // of the IE content window.
+  InfobarType type_;
+
+  // Delegate, connection to the infobar manager.
+  Delegate* delegate_;
+
+  // URL to navigate to.
+  std::wstring url_;
+
+  // Whether the infobar is shown or not.
+  bool show_;
+
+  // The target height of the infobar.
+  int target_height_;
+
+  // The current height of the infobar.
+  int current_height_;
+
+  // Indicates whether the infobar is sliding.
+  bool sliding_infobar_;
+
+  // The Chrome Frame host handling a Chrome Frame instance for us.
+  CComPtr<InfobarBrowserWindow> chrome_frame_host_;
+
+  // Constructor.
+  InfobarWindow(InfobarType type, Delegate* delegate);
+
+  // If show is true, shrinks IE content window and shows the infobar
+  // either at the top or at the bottom. Otherwise, hides the infobar and
+  // restores IE content window.
+  void StartUpdatingLayout(bool show, int max_height, bool slide);
+
+  // Based on the current height and the target height, decides the height of
+  // the next step. This is used when showing sliding effect.
+  int CalculateNextHeight();
+
+  // Calculates the position of the infobar based on its current height.
+  RECT CalculatePosition();
+
+  // Updates the layout (sizes and positions of infobar and IE content window)
+  // based on the current height.
+  void UpdateLayout();
+
+  HRESULT GetContentSize(SIZE* size);
+
+  // Event handlers.
+  LRESULT OnTimer(UINT_PTR nIDEvent);
+  LRESULT OnCreate(LPCREATESTRUCT lpCreateStruct);
+  void OnPaint(CDCHandle dc);
+  void OnSize(UINT type, CSize size);
+
+  void AdjustSize();
+
+  DISALLOW_COPY_AND_ASSIGN(InfobarWindow);
+};
+
+}  // namespace infobar_api
+
+#endif  // CEEE_IE_PLUGIN_BHO_INFOBAR_WINDOW_H_