Add UMA stats for tracking bookmark depth

chrome/browser/ui/gtk/bookmarks/bookmark_bar_gtk.cc

 // Copyright (c) 2012 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/ui/gtk/bookmarks/bookmark_bar_gtk.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
@@ skipping 1168 matching lines @@
   const BookmarkNode* node = GetNodeForToolButton(sender);
   DCHECK(node);
   DCHECK(node->is_url());
   DCHECK(page_navigator_);
 
   RecordAppLaunch(browser_->profile(), node->url());
   chrome::OpenAll(window_->GetNativeWindow(), page_navigator_, node,
                   event_utils::DispositionForCurrentButtonPressEvent(),
                   browser_->profile());
 
-  RecordBookmarkLaunch(GetBookmarkLaunchLocation());
+  RecordBookmarkLaunch(node, GetBookmarkLaunchLocation());
 }
 
 void BookmarkBarGtk::OnButtonDragBegin(GtkWidget* button,
                                        GdkDragContext* drag_context) {
   GtkWidget* button_parent = gtk_widget_get_parent(button);
 
   // The parent tool item might be removed during the drag. Ref it so |button|
   // won't get destroyed.
   g_object_ref(button_parent);
 
@@ skipping 308 matching lines @@
 void BookmarkBarGtk::OnEditBookmarksEnabledChanged() {
   GtkDestDefaults dest_defaults =
       *edit_bookmarks_enabled_ ? GTK_DEST_DEFAULT_ALL :
                                  GTK_DEST_DEFAULT_DROP;
   gtk_drag_dest_set(overflow_button_, dest_defaults, NULL, 0, kDragAction);
   gtk_drag_dest_set(other_bookmarks_button_, dest_defaults,
                     NULL, 0, kDragAction);
   ui::SetDestTargetList(overflow_button_, kDestTargetList);
   ui::SetDestTargetList(other_bookmarks_button_, kDestTargetList);
 }