Set the parent of BookmarkContextMenu to be the browser window, not

chrome/browser/gtk/bookmark_menu_controller_gtk.cc

 // 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_menu_controller_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include "app/gtk_dnd_util.h"
 #include "app/l10n_util.h"
@@ skipping 225 matching lines @@
     DCHECK_NE(is_empty_menu, !!node);
     if (!is_empty_menu)
       parent = node->GetParent();
 
     // Show the right click menu and stop processing this button event.
     std::vector<const BookmarkNode*> nodes;
     if (node)
       nodes.push_back(node);
     controller->context_menu_.reset(
         new BookmarkContextMenu(
-            sender, controller->profile_, controller->browser_,
-            controller->page_navigator_, parent, nodes,
+            GTK_WIDGET(controller->parent_window_), controller->profile_,
+            controller->browser_, controller->page_navigator_, parent, nodes,
             BookmarkContextMenu::BOOKMARK_BAR));
 
     // Our bookmark folder menu loses the grab to the context menu. When the
     // context menu is hidden, re-assert our grab.
     GtkWidget* grabbing_menu = gtk_grab_get_current();
     g_object_ref(grabbing_menu);
     g_signal_connect(controller->context_menu_->menu(), "hide",
                      G_CALLBACK(OnContextMenuHide), grabbing_menu);
 
     controller->context_menu_->PopupAsContext(event->time);
@@ skipping 81 matching lines @@
 // static
 void BookmarkMenuController::OnMenuItemDragGet(
     GtkWidget* widget, GdkDragContext* context,
     GtkSelectionData* selection_data,
     guint target_type, guint time,
     BookmarkMenuController* controller) {
   const BookmarkNode* node = bookmark_utils::BookmarkNodeForWidget(widget);
   bookmark_utils::WriteBookmarkToSelection(node, selection_data, target_type,
                                            controller->profile_);
 }