Consistently use int64 for integers holding number of milliseconds.

chrome/browser/history/expire_history_backend.cc

 // Copyright (c) 2006-2008 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/history/expire_history_backend.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/compiler_specific.h"
@@ skipping 398 matching lines @@
     cur_visit.url_id = main_id_to_archived_id[cur_visit.url_id];
     cur_visit.referring_visit = 0;
     archived_db_->AddVisit(&cur_visit);
     // Ignore failures, we will delete it from the main DB no matter what.
   }
 }
 
 void ExpireHistoryBackend::ScheduleArchive(TimeDelta delay) {
   factory_.RevokeAll();
   MessageLoop::current()->PostDelayedTask(FROM_HERE, factory_.NewRunnableMethod(
-          &ExpireHistoryBackend::DoArchiveIteration),
-      static_cast<int>(delay.InMilliseconds()));
+          &ExpireHistoryBackend::DoArchiveIteration), delay.InMilliseconds());
 }
 
 void ExpireHistoryBackend::DoArchiveIteration() {
   DCHECK(expiration_threshold_ != TimeDelta()) << "threshold should be set";
   Time threshold = Time::Now() - expiration_threshold_;
 
   if (ArchiveSomeOldHistory(threshold, kNumExpirePerIteration)) {
     // Possibly more items to delete now, schedule it sooner to happen again.
     ScheduleArchive(TimeDelta::FromSeconds(kExpirationDelaySec));
   } else {
@@ skipping 72 matching lines @@
   // We use the bookmark service to determine if a URL is bookmarked. The
   // bookmark service is loaded on a separate thread and may not be done by the
   // time we get here. We therefor block until the bookmarks have finished
   // loading.
   if (bookmark_service_)
     bookmark_service_->BlockTillLoaded();
   return bookmark_service_;
 }
 
 }  // namespace history