Replace ToLower calls to the new format

chrome/browser/extensions/api/music_manager_private/device_id_win.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/extensions/api/music_manager_private/device_id.h"
 
 // Note: The order of header includes is important, as we want both pre-Vista
 // and post-Vista data structures to be defined, specifically
 // PIP_ADAPTER_ADDRESSES and PMIB_IF_ROW2.
 #include <winsock2.h>
@@ skipping 58 matching lines @@
  private:
   void ProcessPhysicalAddress(NET_IFINDEX index,
                               const void* bytes,
                               size_t size) {
     if (index >= found_index_ || size == 0)
       return;
 
     if (!is_valid_mac_address_.Run(bytes, size))
       return;
 
-    found_mac_address_ = base::StringToLowerASCII(base::HexEncode(bytes, size));
+    found_mac_address_ = base::ToLowerASCII(base::HexEncode(bytes, size));
     found_index_ = index;
   }
 
   const IsValidMacAddressCallback& is_valid_mac_address_;
   std::string found_mac_address_;
   NET_IFINDEX found_index_;
 };
 
 std::string GetMacAddressFromGetAdaptersAddresses(
     const IsValidMacAddressCallback& is_valid_mac_address) {
@@ skipping 125 matching lines @@
   content::BrowserThread::PostTask(
       content::BrowserThread::FILE,
       FROM_HERE,
       base::Bind(GetMacAddress,
         base::Bind(DeviceId::IsValidMacAddress),
         base::Bind(GetMacAddressCallback, callback)));
 }
 
 }  // namespace api
 }  // namespace extensions