Deleted OS_WIN and all Windows specific files from base.

base/i18n/icu_util_nacl_win64.cc

Index: base/i18n/icu_util_nacl_win64.cc
diff --git a/base/i18n/icu_util_nacl_win64.cc b/base/i18n/icu_util_nacl_win64.cc
deleted file mode 100644
index 9ba8640b5598c6e7bb2578079081471d6ca82c6e..0000000000000000000000000000000000000000
--- a/base/i18n/icu_util_nacl_win64.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2009 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 "base/i18n/icu_util.h"
-
-namespace base {
-namespace i18n {
-
-BASE_I18N_EXPORT bool InitializeICU() {
-  return true;
-}
-
-}  // namespace i18n
-}  // namespace base