Use a direct include of utf_string_conversions.h in chrome/browser/, part 2.

chrome/browser/extensions/test_management_policy.cc

 // Copyright (c) 2012 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/test_management_policy.h"
 
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 
 namespace extensions {
 TestManagementPolicyProvider::TestManagementPolicyProvider()
     : may_load_(true),
       may_modify_status_(true),
       must_remain_enabled_(false) {
   error_message_ = UTF8ToUTF16(expected_error());
 }
 
 TestManagementPolicyProvider::TestManagementPolicyProvider(
@@ skipping 27 matching lines @@
   return may_modify_status_;
 }
 
 bool TestManagementPolicyProvider::MustRemainEnabled(const Extension* extension,
                                                      string16* error) const {
   if (error && must_remain_enabled_)
     *error = error_message_;
   return must_remain_enabled_;
 }
 }  // namespace