Update ToLower/UpperASCII API

components/dom_distiller/core/viewer.cc

 // Copyright 2014 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 "components/dom_distiller/core/viewer.h"
 
 #include <string>
 #include <vector>
 
 #include "base/json/json_writer.h"
@@ skipping 242 matching lines @@
 }
 
 scoped_ptr<ViewerHandle> CreateViewRequest(
     DomDistillerServiceInterface* dom_distiller_service,
     const std::string& path,
     ViewRequestDelegate* view_request_delegate,
     const gfx::Size& render_view_size) {
   std::string entry_id =
       url_utils::GetValueForKeyInUrlPathQuery(path, kEntryIdKey);
   bool has_valid_entry_id = !entry_id.empty();
-  entry_id = base::StringToUpperASCII(entry_id);
+  entry_id = base::ToUpperASCII(entry_id);
 
   std::string requested_url_str =
       url_utils::GetValueForKeyInUrlPathQuery(path, kUrlKey);
   GURL requested_url(requested_url_str);
   bool has_valid_url = url_utils::IsUrlDistillable(requested_url);
 
   if (has_valid_entry_id && has_valid_url) {
     // It is invalid to specify a query param for both |kEntryIdKey| and
     // |kUrlKey|.
     return scoped_ptr<ViewerHandle>();
@@ skipping 20 matching lines @@
 }
 
 const std::string GetDistilledPageFontFamilyJs(
     DistilledPagePrefs::FontFamily font_family) {
   return "useFontFamily('" + GetJsFontFamily(font_family) + "');";
 }
 
 }  // namespace viewer
 
 }  // namespace dom_distiller