Add UMA stats for tracking bookmark depth

chrome/browser/ui/gtk/bookmarks/bookmark_menu_controller_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_menu_controller_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
+#include "chrome/browser/bookmarks/bookmark_stats.h"
 #include "chrome/browser/bookmarks/bookmark_utils.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/bookmarks/bookmark_utils.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
 #include "chrome/browser/ui/gtk/event_utils.h"
 #include "chrome/browser/ui/gtk/gtk_chrome_button.h"
 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/browser/ui/gtk/menu_gtk.h"
@@ skipping 108 matching lines @@
 void BookmarkMenuController::CloseMenu() {
   context_menu_->Cancel();
 }
 
 void BookmarkMenuController::NavigateToMenuItem(
     GtkWidget* menu_item,
     WindowOpenDisposition disposition) {
   const BookmarkNode* node = GetNodeFromMenuItem(menu_item);
   DCHECK(node);
   DCHECK(page_navigator_);
+  RecordBookmarkLaunch(node, BOOKMARK_LAUNCH_LOCATION_BAR_SUBFOLDER);
   page_navigator_->OpenURL(OpenURLParams(
       node->url(), content::Referrer(), disposition,
       content::PAGE_TRANSITION_AUTO_BOOKMARK, false));
 }
 
 void BookmarkMenuController::BuildMenu(const BookmarkNode* parent,
                                        int start_child_index,
                                        GtkWidget* menu) {
   DCHECK(parent->empty() || start_child_index < parent->child_count());
 
@@ skipping 216 matching lines @@
 
 void BookmarkMenuController::OnMenuItemDragGet(GtkWidget* widget,
                                                GdkDragContext* context,
                                                GtkSelectionData* selection_data,
                                                guint target_type,
                                                guint time) {
   const BookmarkNode* node = BookmarkNodeForWidget(widget);
   WriteBookmarkToSelection(
       node, selection_data, target_type, browser_->profile());
 }