Preview CL for adding an Infobar facility to Google Chrome Frame....

chrome_frame/infobars/manager.h

+// 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_MANAGER_H_
+#define CHROME_FRAME_INFOBARS_MANAGER_H_
+
+#include <windows.h>
+
+#include "chrome_frame/infobars/content.h"
+
+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
+};
+
+// InfobarManager creates and manages infobars, which are displayed at the top
+// or bottom of IE content window.
+class InfobarManager {
+ public:
+  static InfobarManager* Get(HWND tab_window);

[grt (UTC plus 2), 2010/11/25 18:00:13]

Please document ownership: does caller own the manager after the call?  Can this
return NULL?

[erikwright (departed), 2010/12/01 20:05:52]

Thanks.

+
+  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::Reset() is guaranteed to be called when the Infobar
+  // facility is finished with the content (either through failure or when
+  // successfully hidden).
+  //
+  // The InfobarContent implementation is responsible for freeing itself and its
+  // resources at any time during or after the call to Reset().
+  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;
+};
+
+#endif  // CHROME_FRAME_INFOBARS_MANAGER_H_