Convert remaining StringToLowerASCII to ToLowerASCII

remoting/signaling/jid_util.cc

 // Copyright 2015 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 "remoting/signaling/jid_util.h"
 
 #include "base/strings/string_util.h"
 
 namespace remoting {
 
 std::string NormalizeJid(const std::string& jid) {
   std::string bare_jid;
   std::string resource;
   if (SplitJidResource(jid, &bare_jid, &resource)) {
-    return base::StringToLowerASCII(bare_jid) + "/" + resource;
+    return base::ToLowerASCII(bare_jid) + "/" + resource;
   }
-  return base::StringToLowerASCII(bare_jid);
+  return base::ToLowerASCII(bare_jid);
 }
 
 bool SplitJidResource(const std::string& full_jid,
                       std::string* bare_jid,
                       std::string* resource) {
   size_t slash_index = full_jid.find('/');
   if (slash_index == std::string::npos) {
     if (bare_jid) {
       *bare_jid = full_jid;
     }
     if (resource) {
       resource->clear();
     }
     return false;
   }
 
   if (bare_jid) {
     *bare_jid = full_jid.substr(0, slash_index);
   }
   if (resource) {
     *resource = full_jid.substr(slash_index + 1);
   }
   return true;
 }
 
 }  // namespace remoting