Chromecast: get locale from ICU instead of caching permanently.

chromecast/browser/cast_http_user_agent_settings.cc

 // Copyright 2014 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 "chromecast/browser/cast_http_user_agent_settings.h"
 
+#include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "chromecast/common/cast_content_client.h"
 #include "content/public/browser/browser_thread.h"
 #include "grit/chromecast_settings.h"
 #include "net/http/http_util.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_ANDROID)
 #include "base/android/locale_utils.h"
 #endif  // defined(OS_ANDROID)
 
 namespace chromecast {
 namespace shell {
 
 CastHttpUserAgentSettings::CastHttpUserAgentSettings() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 }
 
 CastHttpUserAgentSettings::~CastHttpUserAgentSettings() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 }
 
 std::string CastHttpUserAgentSettings::GetAcceptLanguage() const {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
-  if (accept_language_.empty()) {
+  std::string new_locale(
+#if defined(OS_ANDROID)
+      // TODO(byungchul): Use transient locale set when new app starts.
+      base::android::GetDefaultLocale()
+#else
+      base::i18n::GetConfiguredLocale()
+#endif
+      );
+  if (new_locale != last_locale_ || accept_language_.empty()) {
+    last_locale_ = new_locale;
     accept_language_ = net::HttpUtil::GenerateAcceptLanguageHeader(
 #if defined(OS_ANDROID)
-        base::android::GetDefaultLocale()
+        last_locale_
 #else
         l10n_util::GetStringUTF8(IDS_CHROMECAST_SETTINGS_ACCEPT_LANGUAGES)
-#endif  // defined(OS_ANDROID)
+#endif
         );
+    LOG(INFO) << "Locale changed: accept_language=" << accept_language_;
   }
   return accept_language_;
 }
 
 std::string CastHttpUserAgentSettings::GetUserAgent() const {
   return chromecast::shell::GetUserAgent();
 }
 
 }  // namespace shell
 }  // namespace chromecast