Extend with a language code in http accept languages

android_webview/browser/net/aw_http_user_agent_settings.cc

 // Copyright (c) 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 "android_webview/browser/net/aw_http_user_agent_settings.h"
 
 #include "android_webview/browser/aw_content_browser_client.h"
 #include "android_webview/common/aw_content_client.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/http/http_util.h"
+#include "net/http/http_util_icu.h"
 
 namespace android_webview {
 
 AwHttpUserAgentSettings::AwHttpUserAgentSettings() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 }
 
 AwHttpUserAgentSettings::~AwHttpUserAgentSettings() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
 }
 
 std::string AwHttpUserAgentSettings::GetAcceptLanguage() const {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   std::string new_aw_accept_language =
       AwContentBrowserClient::GetAcceptLangsImpl();
   if (new_aw_accept_language != last_aw_accept_language_) {
     last_http_accept_language_ =
-        net::HttpUtil::GenerateAcceptLanguageHeader(new_aw_accept_language);
+        net::http_util_icu::GenerateAcceptLanguageHeader(
+            new_aw_accept_language);
     last_aw_accept_language_ = new_aw_accept_language;
   }
   return last_http_accept_language_;
 }
 
 std::string AwHttpUserAgentSettings::GetUserAgent() const {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   return android_webview::GetUserAgent();
 }
 
 }  // namespace android_webview