Removes some dead database code

chrome/browser/history/history_service.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.
 
 // The history system runs on a background thread so that potentially slow
 // database operations don't delay the browser. This backend processing is
 // represented by HistoryBackend. The HistoryService's job is to dispatch to
 // that thread.
 //
 // Main thread                       History thread
@@ skipping 425 matching lines @@
     CancelableRequestConsumerBase* consumer,
     const Time from_time,
     int max_result_count,
     const SegmentQueryCallback& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   return Schedule(PRIORITY_UI, &HistoryBackend::QuerySegmentUsage,
                   consumer, new history::QuerySegmentUsageRequest(callback),
                   from_time, max_result_count);
 }
 
-void HistoryService::IncreaseSegmentDuration(const GURL& url,
-                                             Time time,
-                                             base::TimeDelta delta) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  ScheduleAndForget(PRIORITY_NORMAL, &HistoryBackend::IncreaseSegmentDuration,
-                    url, time, delta);
-}
-
-HistoryService::Handle HistoryService::QuerySegmentDurationSince(
-    CancelableRequestConsumerBase* consumer,
-    base::Time from_time,
-    int max_result_count,
-    const SegmentQueryCallback& callback) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  return Schedule(PRIORITY_UI, &HistoryBackend::QuerySegmentDuration,
-                  consumer, new history::QuerySegmentUsageRequest(callback),
-                  from_time, max_result_count);
-}
-
 void HistoryService::FlushForTest(const base::Closure& flushed) {
   thread_->message_loop_proxy()->PostTaskAndReply(
       FROM_HERE, base::Bind(&base::DoNothing), flushed);
 }
 
 void HistoryService::SetOnBackendDestroyTask(const base::Closure& task) {
   DCHECK(thread_checker_.CalledOnValidThread());
   ScheduleAndForget(PRIORITY_NORMAL, &HistoryBackend::SetOnBackendDestroyTask,
                     base::MessageLoop::current(), task);
 }
@@ skipping 797 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   visit_database_observers_.RemoveObserver(observer);
 }
 
 void HistoryService::NotifyVisitDBObserversOnAddVisit(
     const history::BriefVisitInfo& info) {
   DCHECK(thread_checker_.CalledOnValidThread());
   FOR_EACH_OBSERVER(history::VisitDatabaseObserver, visit_database_observers_,
                     OnAddVisit(info));
 }