Implement window open disposition for (some) navigation buttons....

chrome/common/gtk_util.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_COMMON_GTK_UTIL_H_
 #define CHROME_COMMON_GTK_UTIL_H_
 
 #include <gtk/gtk.h>
 #include <string>
 
@@ skipping 82 matching lines @@
 class EnumerateWindowsDelegate {
  public:
   // |xid| is the X Window ID of the enumerated window.  Return true to stop
   // further iteration.
   virtual bool ShouldStopIterating(XID xid) = 0;
 };
 
 // Enumerates the top-level gdk windows of the current display.
 void EnumerateChildWindows(EnumerateWindowsDelegate* delegate);
 
+// Set that a button causes a page navigation. In particular, it will accept
+// middle clicks. Warning: only call this *after* you have connected your
+// own handlers for button-press and button-release events, or you will not get
+// those events.
+void SetButtonTriggersNavigation(GtkWidget* button);
+
 }  // namespace gtk_util
 
 #endif  // CHROME_COMMON_GTK_UTIL_H_