Add PrerenderLocalPredictor, which will eventually perform

chrome/browser/history/history_backend.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.
 
 #include "chrome/browser/history/history_backend.h"
 
 #include <list>
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 752 matching lines @@
     // user can search for URL components and get the page.
     //
     // However, in most cases, we'll get at least a title and usually contents,
     // and this add will be redundant, slowing everything down. As a result,
     // we ignore this edge case.
   }
 
   // Add the visit with the time to the database.
   VisitRow visit_info(url_id, time, referring_visit, transition, 0);
   VisitID visit_id = db_->AddVisit(&visit_info, visit_source);
+  NotifyVisitObservers(visit_info);
 
   if (visit_info.visit_time < first_recorded_time_)
     first_recorded_time_ = visit_info.visit_time;
 
   // Broadcast a notification of the visit.
   if (visit_id) {
     URLVisitedDetails* details = new URLVisitedDetails;
     details->transition = transition;
     details->row = url_info;
     // TODO(meelapshah) Disabled due to potential PageCycler regression.
@@ skipping 73 matching lines @@
       VisitRow visit_info(url_id, i->last_visit(), 0,
                           content::PageTransitionFromInt(
                               content::PAGE_TRANSITION_LINK |
                               content::PAGE_TRANSITION_CHAIN_START |
                               content::PAGE_TRANSITION_CHAIN_END), 0);
       visit_info.is_indexed = has_indexed;
       if (!visit_database->AddVisit(&visit_info, visit_source)) {
         NOTREACHED() << "Adding visit failed.";
         return;
       }
+      NotifyVisitObservers(visit_info);
 
       if (visit_info.visit_time < first_recorded_time_)
         first_recorded_time_ = visit_info.visit_time;
     }
   }
 
   // Broadcast a notification for typed URLs that have been modified. This
   // will be picked up by the in-memory URL database on the main thread.
   //
   // TODO(brettw) bug 1140015: Add an "add page" notification so the history
@@ skipping 1594 matching lines @@
                                  &favicon->icon_url, &favicon->icon_type))
     return false;
 
   favicon->expired = (Time::Now() - last_updated) >
       TimeDelta::FromDays(kFaviconRefetchDays);
   favicon->known_icon = true;
   favicon->image_data = data;
   return true;
 }
 
+void HistoryBackend::NotifyVisitObservers(const VisitRow& visit) {
+  BriefVisitInfo info;
+  info.url_id = visit.url_id;
+  info.time = visit.visit_time;
+  info.transition = visit.transition;
+  // If we don't have a delegate yet during setup or shutdown, we will drop
+  // these notifications.
+  if (delegate_.get())
+    delegate_->NotifyVisitDBObserversOnAddVisit(info);
+}
+
 }  // namespace history