Replace ToLower calls to the new format

components/crx_file/id_util.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/crx_file/id_util.h"
 
 #include "base/files/file_path.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 22 matching lines @@
 namespace crx_file {
 namespace id_util {
 
 // First 16 bytes of SHA256 hashed public key.
 const size_t kIdSize = 16;
 
 std::string GenerateId(const std::string& input) {
   uint8 hash[kIdSize];
   crypto::SHA256HashString(input, hash, sizeof(hash));
   std::string output =
-      base::StringToLowerASCII(base::HexEncode(hash, sizeof(hash)));
+      base::ToLowerASCII(base::HexEncode(hash, sizeof(hash)));
   ConvertHexadecimalToIDAlphabet(&output);
 
   return output;
 }
 
 std::string GenerateIdForPath(const base::FilePath& path) {
   base::FilePath new_path = MaybeNormalizePath(path);
   std::string path_bytes =
       std::string(reinterpret_cast<const char*>(new_path.value().data()),
                   new_path.value().size() * sizeof(base::FilePath::CharType));
@@ skipping 22 matching lines @@
 #endif
 }
 
 bool IdIsValid(const std::string& id) {
   // Verify that the id is legal.
   if (id.size() != (crx_file::id_util::kIdSize * 2))
     return false;
 
   // We only support lowercase IDs, because IDs can be used as URL components
   // (where GURL will lowercase it).
-  std::string temp = base::StringToLowerASCII(id);
+  std::string temp = base::ToLowerASCII(id);
   for (size_t i = 0; i < temp.size(); i++)
     if (temp[i] < 'a' || temp[i] > 'p')
       return false;
 
   return true;
 }
 
 }  // namespace id_util
 }  // namespace crx_file