The search terms are escaped using + or %20 for space depending on whether re...

chrome/browser/dom_ui/history_ui.cc

 // Copyright (c) 2009 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/dom_ui/history_ui.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/i18n/time_formatting.h"
 #include "base/message_loop.h"
@@ skipping 359 matching lines @@
       ChromeThread::IO, FROM_HERE,
       NewRunnableMethod(
           Singleton<ChromeURLDataManager>::get(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(html_source)));
 }
 
 // static
 const GURL HistoryUI::GetHistoryURLWithSearchText(const std::wstring& text) {
   return GURL(std::string(chrome::kChromeUIHistoryURL) + "#q=" +
-              EscapeQueryParamValue(WideToUTF8(text)));
+              EscapeQueryParamValue(WideToUTF8(text), true));
 }
 
 // static
 RefCountedMemory* HistoryUI::GetFaviconResourceBytes() {
   return ResourceBundle::GetSharedInstance().
       LoadDataResourceBytes(IDR_HISTORY_FAVICON);
 }