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diff --git a/chrome_frame/infobars/infobar_manager.h b/chrome_frame/infobars/infobar_manager.h
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+++ b/chrome_frame/infobars/infobar_manager.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.
+
+#ifndef CHROME_FRAME_INFOBARS_INFOBAR_MANAGER_H_
+#define CHROME_FRAME_INFOBARS_INFOBAR_MANAGER_H_
+
+#include <windows.h>
+
+class InfobarContent;
+
+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
+};
+
+// Creates and manages infobars at the top or bottom of an IE content window.
+// Instances must only be retrieved and used within the UI thread of the IE
+// content window.
+class InfobarManager {
+ public:
+  // Returns an InfobarManager for the specified IE tab window. Caller does not
+  // own the pointer (resources will be freed when the window is destroyed).
+  //
+  // The pointer may be invalidated by further processing of window events, and
+  // as such should be immediately discarded after use.
+  //
+  // Returns NULL in case of failure.
+  static InfobarManager* Get(HWND tab_window);
+
+  virtual ~InfobarManager();
+
+  // Shows the supplied content in an infobar of the specified type.
+  // Normally, InfobarContent::InstallInFrame will be called with an interface
+  // the content may use to interact with the Infobar facility.
+  //
+  // InfobarContent is deleted when the Infobar facility is finished with the
+  // content (either through failure or when successfully hidden).
+  virtual bool Show(InfobarContent* content, InfobarType type) = 0;
+
+  // Hides the infobar of the specified type.
+  virtual void Hide(InfobarType type) = 0;
+
+  // Hides all infobars.
+  virtual void HideAll() = 0;
+};  // class InfobarManager
+
+#endif  // CHROME_FRAME_INFOBARS_INFOBAR_MANAGER_H_