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

chrome/browser/net/spdyproxy/http_auth_handler_spdyproxy.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/net/spdyproxy/http_auth_handler_spdyproxy.h"
 
 #include <string>
 
 #include "base/i18n/icu_string_conversions.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_auth.h"
 #include "net/http/http_request_info.h"
 
 namespace spdyproxy {
 
 using net::AuthCredentials;
 using net::BoundNetLog;
 using net::CompletionCallback;
 using net::HttpAuth;
@@ skipping 136 matching lines @@
     realm_ = realm;
   } else if (LowerCaseEqualsASCII(name, "ps")) {
     ps_token_ = value;
   } else {
     VLOG(1) << "Skipping unrecognized SpdyProxy auth property, " << name;
   }
   return true;
 }
 
 }  // namespace spdyproxy