[cronet] Make getAcceptLanguages index a static table instead of the application bundle.

components/cronet/ios/test/cronet_acceptlang_test.mm

+// Copyright 2016 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.
+
+#import <Cronet/Cronet.h>
+#import <Foundation/Foundation.h>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+@interface Cronet (ExposedForTesting)
++ (NSString*)getAcceptLanguagesFromNSLocale:(NSLocale*)locale;
+@end
+
+namespace cronet {
+
+#define EXPECT_NSEQ(a, b) EXPECT_TRUE([(a) isEqual:(b)])
+
+TEST(AcceptLangTest, Region) {
+  NSString* acceptLangs = [Cronet
+      getAcceptLanguagesFromNSLocale:[NSLocale
+                                         localeWithLocaleIdentifier:@"en-GB"]];
+
+  EXPECT_NSEQ(acceptLangs, @"en-GB,en-US,en");
+}
+
+TEST(AcceptLangTest, Lang) {
+  NSString* acceptLangs = [Cronet
+      getAcceptLanguagesFromNSLocale:[NSLocale
+                                         localeWithLocaleIdentifier:@"ja-JP"]];
+
+  EXPECT_NSEQ(acceptLangs, @"ja,en-US,en");
+}
+
+TEST(AcceptLangTest, Default) {
+  NSString* acceptLangs =
+      [Cronet getAcceptLanguagesFromNSLocale:
+                  [NSLocale localeWithLocaleIdentifier:@"lol-LOL"]];
+
+  EXPECT_NSEQ(acceptLangs, @"en-US,en");
+}
+}