Remove HistoryPublisher 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 578 matching lines @@
          ++i)
       urls.push_back(i->url());
 
     visitedlink_master_->AddURLs(urls);
   }
 
   ScheduleAndForget(PRIORITY_NORMAL,
                     &HistoryBackend::AddPagesWithDetails, info, visit_source);
 }
 
-void HistoryService::SetPageContents(const GURL& url,
-                                     const string16& contents) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (!CanAddURL(url))
-    return;
-
-  ScheduleAndForget(PRIORITY_LOW, &HistoryBackend::SetPageContents,
-                    url, contents);
-}
-
 CancelableTaskTracker::TaskId HistoryService::GetFavicons(
     const std::vector<GURL>& icon_urls,
     int icon_types,
     int desired_size_in_dip,
     const std::vector<ui::ScaleFactor>& desired_scale_factors,
     const FaviconService::FaviconResultsCallback& callback,
     CancelableTaskTracker* tracker) {
   DCHECK(thread_checker_.CalledOnValidThread());
   LoadBackendIfNecessary();
 
@@ skipping 656 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));
 }