Use a direct include of strings headers in content/browser/, part 2.

content/browser/loader/certificate_resource_handler.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 "content/browser/loader/certificate_resource_handler.h"
 
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/common/resource_response.h"
 #include "net/base/io_buffer.h"
 #include "net/base/mime_sniffer.h"
 #include "net/base/mime_util.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_status.h"
 
@@ skipping 124 matching lines @@
   DCHECK_EQ(content_length_, bytes_copied);
 }
 
 void CertificateResourceHandler::OnDataDownloaded(
     int request_id,
     int bytes_downloaded) {
   NOTREACHED();
 }
 
 }  // namespace content