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

chrome_frame/infobar_content.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_INFOBAR_CONTENT_H_
+
+class InfobarContent {
+ public:
+  class ContentFrame {
+   public:
+    virtual ~ContentFrame() {}
+    virtual HWND GetFrameWindow() = 0;
+    virtual void CloseInfobar() = 0;
+  };
+
+  virtual HRESULT InstallInFrame(ContentFrame* frame) = 0;
+  virtual void Reset() = 0;
+  virtual void OnShow() = 0;
+  virtual void OnHide() = 0;
+  virtual void SetDimensions(const RECT& dimensions) = 0;
+};
+
+#endif  // CHROME_FRAME_INFOBAR_CONTENT_H_