History import was exercising a codepath that didn't have code to update Hist...

chrome/browser/history/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/history_backend.h"
 
 #include <set>
 
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
@@ skipping 622 matching lines @@
     //
     // 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);
 
+  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->row = url_info;
     BroadcastNotifications(NotificationType::HISTORY_URL_VISITED, details);
   }
 
   return std::make_pair(url_id, visit_id);
 }
 
@@ skipping 57 matching lines @@
 
     // Make up a visit to correspond to that page.
     VisitRow visit_info(url_id, i->last_visit(), 0,
         PageTransition::LINK | PageTransition::CHAIN_START |
         PageTransition::CHAIN_END, 0);
     visit_info.is_indexed = has_indexed;
     if (!visit_database->AddVisit(&visit_info)) {
       NOTREACHED() << "Adding visit failed.";
       return;
     }
+
+    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
   // views can keep in sync.
   BroadcastNotifications(NotificationType::HISTORY_TYPED_URLS_MODIFIED,
                          modified);
 
@@ skipping 1117 matching lines @@
   return true;
 }
 
 BookmarkService* HistoryBackend::GetBookmarkService() {
   if (bookmark_service_)
     bookmark_service_->BlockTillLoaded();
   return bookmark_service_;
 }
 
 }  // namespace history