Remove Chrome's own version of libaddressinput in favor of the upstream.

third_party/libaddressinput/chromium/cpp/src/util/cctype_tolower_equal.cc

Index: third_party/libaddressinput/chromium/cpp/src/util/cctype_tolower_equal.cc
diff --git a/third_party/libaddressinput/chromium/cpp/src/util/cctype_tolower_equal.cc b/third_party/libaddressinput/chromium/cpp/src/util/cctype_tolower_equal.cc
deleted file mode 100644
index 819138f617015481de9ec55178febc3e27199604..0000000000000000000000000000000000000000
--- a/third_party/libaddressinput/chromium/cpp/src/util/cctype_tolower_equal.cc
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright (C) 2014 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "cctype_tolower_equal.h"
-
-#include <algorithm>
-#include <cctype>
-#include <functional>
-#include <string>
-
-namespace i18n {
-namespace addressinput {
-
-namespace {
-
-struct EqualToTolowerChar
-    : public std::binary_function<std::string::value_type,
-                                  std::string::value_type, bool> {
-  result_type operator()(first_argument_type a, second_argument_type b) const {
-    return std::tolower(a) == std::tolower(b);
-  }
-};
-
-}  // namespace
-
-EqualToTolowerString::result_type EqualToTolowerString::operator()(
-    const first_argument_type& a, const second_argument_type& b) const {
-  return a.size() == b.size() &&
-         std::equal(a.begin(), a.end(), b.begin(), EqualToTolowerChar());
-}
-
-}  // addressinput
-}  // i18n