Implement a mostly working InfoBubble with a shim BookmarkBubble.

chrome/browser/gtk/bookmark_bubble_gtk.cc

Index: chrome/browser/gtk/bookmark_bubble_gtk.cc
diff --git a/chrome/browser/gtk/bookmark_bubble_gtk.cc b/chrome/browser/gtk/bookmark_bubble_gtk.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3ea219722bad7847f40e60234000cb6d1f94c87d
--- /dev/null
+++ b/chrome/browser/gtk/bookmark_bubble_gtk.cc
@@ -0,0 +1,26 @@
+// 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.
+
+#include "chrome/browser/gtk/bookmark_bubble_gtk.h"
+
+#include <gtk/gtk.h>
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "chrome/browser/gtk/info_bubble_gtk.h"
+
+// static
+void BookmarkBubbleGtk::Show(const gfx::Rect& rect,
+                             Profile* profile,
+                             const GURL& url,
+                             bool newly_bookmarked) {
+  // TODO(deanm): Implement the real bookmark bubble.  For now we just have
+  // a placeholder for testing that input and focus works correctly.
+  GtkWidget* content = gtk_vbox_new(FALSE, 5);
+  gtk_box_pack_start(GTK_BOX(content), gtk_label_new("Hej!"), TRUE, TRUE, 0);
+  gtk_box_pack_start(GTK_BOX(content), gtk_entry_new(), TRUE, TRUE, 0);
+  gtk_box_pack_start(GTK_BOX(content), gtk_entry_new(), TRUE, TRUE, 0);
+  InfoBubbleGtk* bubble = InfoBubbleGtk::Show(rect, content);
+  DCHECK(bubble);

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

Please provide some logging output for this check...

DCHECK(bubble) << "This will happen if ...";

Anything that will help someone troubleshoot what is going on...such as the
input values that caused the check.

[Dean McNamee, 2009/05/01 15:01:46]

I generally try to avoid DCHECK strings unless they're super useful.  If you
work on Chrome, you know how to check down a DCHECK firing.  Also, the strings
end up in our Release binaries (long story).

I don't have anything particularly interesting to say about this, it should
never fail.

+}