The UI language rather than the locale is now used to pick Chrome's language ...

chrome_frame/test/simple_resource_loader_test.cc

 // Copyright (c) 2010 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_frame/simple_resource_loader.h"
 
 #include "base/file_path.h"
 #include "base/win/windows_version.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 38 matching lines @@
   EXPECT_TRUE(
       SimpleResourceLoader::LoadLocaleDll(language_tags, locales_path,
                                           &dll_handle, &file_path));
   if (NULL != dll_handle) {
     FreeLibrary(dll_handle);
     dll_handle = NULL;
   }
   EXPECT_TRUE(file_path.BaseName() == FilePath(L"en-US.dll"));
 }
 
-TEST(SimpleResourceLoaderTest, GetThreadPreferredUILanguages) {
-  std::vector<std::wstring> language_tags;
-
-  if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
-    EXPECT_TRUE(
-      SimpleResourceLoader::GetThreadPreferredUILanguages(&language_tags));
-    // Did we find at least one language?
-    EXPECT_NE(static_cast<std::vector<std::wstring>::size_type>(0),
-              language_tags.size());
-  } else {
-    EXPECT_FALSE(
-      SimpleResourceLoader::GetThreadPreferredUILanguages(&language_tags));
-  }
-}
-
-TEST(SimpleResourceLoaderTest, GetICUSystemLanguage) {
-  std::wstring language;
-  std::wstring region;
-
-  SimpleResourceLoader::GetICUSystemLanguage(&language, &region);
-  EXPECT_NE(static_cast<std::wstring::size_type>(0), language.size());
-}
-
 TEST(SimpleResourceLoaderTest, InstanceTest) {
   SimpleResourceLoader* loader = SimpleResourceLoader::instance();
 
   ASSERT_TRUE(NULL != loader);
   ASSERT_TRUE(NULL != loader->GetResourceModuleHandle());
 }