Clean up header files.

chrome/browser/safe_browsing/incident_reporting/download_metadata_manager.cc

 // Copyright 2014 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/safe_browsing/incident_reporting/download_metadata_manager.h"
 
+#include <limits.h>
 #include <stdint.h>
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/files/important_file_writer.h"
 #include "base/location.h"
@@ skipping 637 matching lines @@
 }
 
 void DownloadMetadataManager::ManagerContext::UpdateLastOpenedTime(
     const base::Time& last_opened_time) {
   download_metadata_->mutable_download()->set_open_time_msec(
       last_opened_time.ToJavaTime());
   WriteMetadata();
 }
 
 }  // namespace safe_browsing