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

chrome/browser/search_engines/template_url.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/search_engines/template_url.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/rlz/rlz.h"
@@ skipping 473 matching lines @@
   int favicon_path_len = arraysize(favicon_path) - 1;
 
   rep.SetPath(favicon_path, url_parse::Component(0, favicon_path_len));
   rep.ClearUsername();
   rep.ClearPassword();
   rep.ClearQuery();
   rep.ClearRef();
   return url.ReplaceComponents(rep);
 }
 
+// static
+bool TemplateURL::SupportsReplacement(const TemplateURL* turl) {
+  return turl && turl->url() && turl->url()->SupportsReplacement();
+}
+
 void TemplateURL::SetSuggestionsURL(const std::wstring& suggestions_url,
                                     int index_offset,
                                     int page_offset) {
   suggestions_url_.Set(suggestions_url, index_offset, page_offset);
 }
 
 void TemplateURL::SetURL(const std::wstring& url,
                          int index_offset,
                          int page_offset) {
   url_.Set(url, index_offset, page_offset);
@@ skipping 49 matching lines @@
   }
   return GURL();
 }
 
 void TemplateURL::InvalidateCachedValues() const {
   url_.InvalidateCachedValues();
   suggestions_url_.InvalidateCachedValues();
   if (autogenerate_keyword_)
     keyword_.clear();
 }