Move StatisticsRecorder out of histogram.cc/h for further refactoring.

chrome/browser/ui/webui/about_ui.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/webui/about_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/i18n/number_formatting.h"
 #include "base/json/json_writer.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/singleton.h"
+#include "base/metrics/statistics_recorder.h"
 #include "base/metrics/stats_table.h"
 #include "base/path_service.h"
 #include "base/string_number_conversions.h"
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/about_flags.h"
@@ skipping 1409 matching lines @@
 
 AboutUI::AboutUI(content::WebUI* web_ui, const std::string& name)
     : WebUIController(web_ui) {
   Profile* profile = Profile::FromWebUI(web_ui);
   ChromeURLDataManager::DataSource* source =
       new AboutUIHTMLSource(name, profile);
   if (source) {
     ChromeURLDataManager::AddDataSource(profile, source);
   }
 }