Remove a deprecated wstring ToLower function.

chrome/browser/search_engines/template_url_model.cc

 // Copyright (c) 2010 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_model.h"
 
 #include "app/l10n_util.h"
 #include "base/stl_util-inl.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
@@ skipping 143 matching lines @@
 
   // Strip "www." off the front of the keyword; otherwise the keyword won't work
   // properly.  See http://code.google.com/p/chromium/issues/detail?id=6984 .
   return net::StripWWW(UTF8ToWide(url.host()));
 }
 
 // static
 std::wstring TemplateURLModel::CleanUserInputKeyword(
     const std::wstring& keyword) {
   // Remove the scheme.
-  std::wstring result(l10n_util::ToLower(keyword));
+  std::wstring result(UTF16ToWide(l10n_util::ToLower(WideToUTF16(keyword))));
   url_parse::Component scheme_component;
   if (url_parse::ExtractScheme(WideToUTF8(keyword).c_str(),
                                static_cast<int>(keyword.length()),
                                &scheme_component)) {
     // Include trailing ':'.
     result.erase(0, scheme_component.end() + 1);
     // Many schemes usually have "//" after them, so strip it too.
     const std::wstring after_scheme(L"//");
     if (result.compare(0, after_scheme.length(), after_scheme) == 0)
       result.erase(0, after_scheme.length());
@@ skipping 931 matching lines @@
 const TemplateURL* TemplateURLModel::GetTemplateURLForExtension(
     Extension* extension) const {
   for (TemplateURLVector::const_iterator i = template_urls_.begin();
        i != template_urls_.end(); ++i) {
     if ((*i)->IsExtensionKeyword() && (*i)->url()->GetHost() == extension->id())
       return *i;
   }
 
   return NULL;
 }