Revert everything related to the relanding.

chrome/browser/chromeos/boot_times_loader.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/chromeos/boot_times_loader.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
-#include "base/histogram.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
 #include "base/thread.h"
 #include "base/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/common/chrome_switches.h"
 
 namespace {
@@ skipping 207 matching lines @@
 
 void BootTimesLoader::SaveChromeMainStats() {
   chrome_main_stats_ = GetCurrentStats();
 }
 
 void BootTimesLoader::RecordChromeMainStats() {
   RecordStats(kChromeMain, chrome_main_stats_);
 }
 
 }  // namespace chromeos