Replace base::str[n]casecmp with helper functions.

components/policy/core/common/registry_dict_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 "components/policy/core/common/registry_dict_win.h"
 
 #include "base/json/json_reader.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 118 matching lines @@
 
   LOG(WARNING) << "Failed to convert " << value.GetType()
                << " to " << schema.type();
   return nullptr;
 }
 
 }  // namespace
 
 bool CaseInsensitiveStringCompare::operator()(const std::string& a,
                                               const std::string& b) const {
-  return base::strcasecmp(a.c_str(), b.c_str()) < 0;
+  return base::CompareCaseInsensitiveASCII(a, b) < 0;
 }
 
 RegistryDict::RegistryDict() {}
 
 RegistryDict::~RegistryDict() {
   ClearKeys();
   ClearValues();
 }
 
 RegistryDict* RegistryDict::GetKey(const std::string& name) {
@@ skipping 191 matching lines @@
       return result.Pass();
     }
     default:
       LOG(WARNING) << "Can't convert registry key to schema type " << type;
   }
 
   return nullptr;
 }
 
 }  // namespace policy