Allow link drags from the star, bookmarks bar, and bookmark bar menus

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/gfx/gtk_util.h"
 #include "app/gtk_dnd_util.h"
@@ skipping 168 matching lines @@
       g_signal_connect(G_OBJECT(menu_item), "button-release-event",
                        G_CALLBACK(OnButtonReleased), this);
     } else if (node->is_folder()) {
       GtkWidget* submenu = gtk_menu_new();
       BuildMenu(node, 0, submenu);
       gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_item), submenu);
     } else {
       NOTREACHED();
     }
 
-    gtk_drag_source_set(menu_item, GDK_BUTTON1_MASK,
-                        NULL, 0, GDK_ACTION_MOVE);
+    gtk_drag_source_set(menu_item, GDK_BUTTON1_MASK, NULL, 0,
+        static_cast<GdkDragAction>(GDK_ACTION_COPY | GDK_ACTION_LINK));
     int target_mask = GtkDndUtil::CHROME_BOOKMARK_ITEM;
     if (node->is_url())
-      target_mask |= GtkDndUtil::TEXT_URI_LIST;
+      target_mask |= GtkDndUtil::TEXT_URI_LIST | GtkDndUtil::NETSCAPE_URL;
     GtkDndUtil::SetSourceTargetListFromCodeMask(menu_item, target_mask);
     g_signal_connect(G_OBJECT(menu_item), "drag-begin",
                      G_CALLBACK(&OnMenuItemDragBegin), this);
     g_signal_connect(G_OBJECT(menu_item), "drag-end",
                      G_CALLBACK(&OnMenuItemDragEnd), this);
     g_signal_connect(G_OBJECT(menu_item), "drag-data-get",
                      G_CALLBACK(&OnMenuItemDragGet), this);
 
     gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item);
     node_to_menu_widget_map_[node] = menu_item;
@@ skipping 145 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_);
 }