Replace ToLower calls to the new format

chrome/browser/install_verification/win/module_verification_common.cc

 // Copyright 2013 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/install_verification/win/module_verification_common.h"
 
 #include "base/files/file_path.h"
 #include "base/md5.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/install_verification/win/loaded_modules_snapshot.h"
 #include "chrome/browser/install_verification/win/module_info.h"
 #include "chrome/browser/install_verification/win/module_list.h"
 
 std::string CalculateModuleNameDigest(const base::string16& module_name) {
-  return base::MD5String(base::StringToLowerASCII(base::UTF16ToUTF8(
+  return base::MD5String(base::ToLowerASCII(base::UTF16ToUTF8(
       base::FilePath(module_name).BaseName().value())));
 }
 
 bool GetLoadedModules(std::set<ModuleInfo>* loaded_modules) {
   std::vector<HMODULE> snapshot;
   if (!GetLoadedModulesSnapshot(&snapshot))
     return false;
 
   ModuleList::FromLoadedModuleSnapshot(snapshot)->GetModuleInfoSet(
       loaded_modules);
   return true;
 }
 
 void ReportModuleMatches(const std::vector<std::string>& module_name_digests,
                          const ModuleIDs& module_ids,
                          ModuleVerificationDelegate* delegate) {
   for (size_t i = 0; i < module_name_digests.size(); ++i) {
     ModuleIDs::const_iterator entry = module_ids.find(module_name_digests[i]);
     if (entry != module_ids.end())
       delegate(entry->second);
   }
 }