Explicitly call OnModelChanged when there are no titles to load

chrome/browser/custom_home_pages_table_model.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/custom_home_pages_table_model.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/rtl.h"
 #include "base/prefs/pref_service.h"
@@ skipping 242 matching lines @@
     if (history_service) {
       entry.task_id = history_service->QueryURL(
           entry.url,
           false,
           base::Bind(&CustomHomePagesTableModel::OnGotOneOfManyTitles,
                      base::Unretained(this),
                      entry.url),
           &task_tracker_);
     }
   }
+  if (entries_.empty())
+    observer_->OnModelChanged();
 }
 
 void CustomHomePagesTableModel::OnGotOneOfManyTitles(const GURL& entry_url,
                                            bool found_url,
                                            const history::URLRow& row,
                                            const history::VisitVector& visits) {
   OnGotTitle(entry_url, false, found_url, row, visits);
   DCHECK_GE(num_outstanding_title_lookups_, 1);
   if (--num_outstanding_title_lookups_ == 0 && observer_)
     observer_->OnModelChanged();
@@ skipping 25 matching lines @@
   }
 }
 
 base::string16 CustomHomePagesTableModel::FormattedURL(int row) const {
   std::string languages =
       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages);
   base::string16 url = net::FormatUrl(entries_[row].url, languages);
   url = base::i18n::GetDisplayStringInLTRDirectionality(url);
   return url;
 }