Makes the omnibox show past searches and suggestions for keywords....

chrome/browser/autocomplete/autocomplete_popup_model.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/autocomplete/autocomplete_popup_model.h"
 
 #include "base/string_util.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
 #include "chrome/browser/autocomplete/autocomplete_popup_view.h"
 #include "chrome/browser/net/dns_global.h"
@@ skipping 194 matching lines @@
     *alternate_nav_url = result.GetAlternateNavURL(controller_->input(), match);
   return match->destination_url;
 }
 
 bool AutocompletePopupModel::GetKeywordForMatch(const AutocompleteMatch& match,
                                                 std::wstring* keyword) const {
   // Assume we have no keyword until we find otherwise.
   keyword->clear();
 
   // If the current match is a keyword, return that as the selected keyword.
-  if (match.template_url && match.template_url->url() &&
-      match.template_url->url()->SupportsReplacement()) {
+  if (TemplateURL::SupportsReplacement(match.template_url)) {
     keyword->assign(match.template_url->keyword());
     return false;
   }
 
   // See if the current match's fill_into_edit corresponds to a keyword.
   if (!profile_->GetTemplateURLModel())
     return false;
   profile_->GetTemplateURLModel()->Load();
   const std::wstring keyword_hint(
       TemplateURLModel::CleanUserInputKeyword(match.fill_into_edit));
   if (keyword_hint.empty())
     return false;
 
   // Don't provide a hint if this keyword doesn't support replacement.
   const TemplateURL* const template_url =
       profile_->GetTemplateURLModel()->GetTemplateURLForKeyword(keyword_hint);
-  if (!template_url || !template_url->url() ||
-      !template_url->url()->SupportsReplacement())
+  if (!TemplateURL::SupportsReplacement(template_url))
     return false;
 
   keyword->assign(keyword_hint);
   return true;
 }
 
 AutocompleteLog* AutocompletePopupModel::GetAutocompleteLog() {
   return new AutocompleteLog(controller_->input().text(),
       controller_->input().type(), selected_line_, 0, controller_->result());
 }
@@ skipping 97 matching lines @@
       }
       edit_model_->OnPopupDataChanged(inline_autocomplete_text, false, keyword,
           is_keyword_hint, type);
       return;
     }
 
     default:
       NOTREACHED();
   }
 }