Add UMA stats for tracking bookmark depth

chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_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_sub_menu_model_gtk.h"
 
 #include "base/stl_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.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/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
 #include "chrome/browser/ui/gtk/menu_gtk.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/accelerators/menu_label_accelerator_util_linux.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 89 matching lines @@
   const gfx::Image& folder_icon = rb.GetImageNamed(IDR_BOOKMARK_BAR_FOLDER);
   SetIcon(GetItemCount() - 1, folder_icon);
   submenus_.push_back(submenu);
 }
 
 void BookmarkNodeMenuModel::NavigateToMenuItem(
     int index,
     WindowOpenDisposition disposition) {
   const BookmarkNode* node = node_->GetChild(index);
   DCHECK(node);
+  RecordBookmarkLaunch(node, BOOKMARK_LAUNCH_LOCATION_WRENCH_MENU);
   page_navigator_->OpenURL(OpenURLParams(
       node->url(), content::Referrer(), disposition,
       content::PAGE_TRANSITION_AUTO_BOOKMARK,
       false));  // is_renderer_initiated
 }
 
 BookmarkSubMenuModel::BookmarkSubMenuModel(
     ui::SimpleMenuModel::Delegate* delegate,
     Browser* browser)
     : BookmarkNodeMenuModel(delegate, NULL, NULL, browser, browser->profile()),
@@ skipping 98 matching lines @@
 
 bool BookmarkSubMenuModel::IsVisibleAt(int index) const {
   // We don't want the delegate interfering with bookmark items.
   return index >= fixed_items_ || SimpleMenuModel::IsVisibleAt(index);
 }
 
 // static
 bool BookmarkSubMenuModel::IsBookmarkItemCommandId(int command_id) {
   return command_id == kBookmarkItemCommandId;
 }