Implement a mostly working InfoBubble with a shim BookmarkBubble.

chrome/browser/gtk/bookmark_bubble_gtk.h

+// Copyright (c) 2009 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_BROWSER_GTK_BOOKMARK_BUBBLE_GTK_H_
+#define CHROME_BROWSER_GTK_BOOKMARK_BUBBLE_GTK_H_
+
+#include "base/basictypes.h"
+#include "googleurl/src/gurl.h"

[ecattell, 2009/04/30 19:55:37]

you should use forward declares rather than including this:

http://www.corp.google.com/eng/doc/cppguide.xml?showone=Header_File_Dependenc...

+
+typedef struct _GtkWidget GtkWidget;
+
+class Profile;
+namespace gfx {
+class Rect;
+}
+
+class BookmarkBubbleGtk {

[ecattell, 2009/04/30 19:55:37]

Since you only have one static function, you should probably add
DISALLOW_IMPLICIT_CONSTRUCTORS() to forbid people from creating this class.

+ public:
+  static void Show(const gfx::Rect& rect,

[ecattell, 2009/04/30 19:55:37]

Please add comments for this function.

+                   Profile* profile,
+                   const GURL& url,
+                   bool newly_bookmarked);
+};
+
+#endif  // CHROME_BROWSER_GTK_BOOKMARK_BUBBLE_GTK_H_