Merge pull request #3048 from deepak1556/accept_language_patch

browser: get accept-language header from system locale

atom/browser/api/atom_api_web_contents.cc

@@ -52,6 +52,7 @@
 #include "net/url_request/static_http_user_agent_settings.h"
 #include "net/url_request/url_request_context.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
+#include "ui/base/l10n/l10n_util.h"
 
 #include "atom/common/node_includes.h"
 
@@ -63,9 +64,12 @@ struct PrintSettings {
 };
 
 void SetUserAgentInIO(scoped_refptr<net::URLRequestContextGetter> getter,
+                      std::string accept_lang,
                       std::string user_agent) {
   getter->GetURLRequestContext()->set_http_user_agent_settings(
-      new net::StaticHttpUserAgentSettings("en-us,en", user_agent));
+      new net::StaticHttpUserAgentSettings(
+          net::HttpUtil::GenerateAcceptLanguageHeader(accept_lang),
+          user_agent));
 }
 
 bool NotifyZoomLevelChanged(
@@ -647,8 +651,10 @@ void WebContents::SetUserAgent(const std::string& user_agent) {
   web_contents()->SetUserAgentOverride(user_agent);
   scoped_refptr<net::URLRequestContextGetter> getter =
       web_contents()->GetBrowserContext()->GetRequestContext();
+
+  auto accept_lang = l10n_util::GetApplicationLocale("");
   getter->GetNetworkTaskRunner()->PostTask(FROM_HERE,
-      base::Bind(&SetUserAgentInIO, getter, user_agent));
+      base::Bind(&SetUserAgentInIO, getter, accept_lang, user_agent));
 }
 
 std::string WebContents::GetUserAgent() {