Use upstream libaddressinput in Chrome.

third_party/libaddressinput/chromium/has_all_required_fields.h

+// Copyright 2014 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.
+
+#ifndef THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_HAS_ALL_REQUIRED_FIELDS_H_
+#define THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_HAS_ALL_REQUIRED_FIELDS_H_
+
+namespace i18n {
+namespace addressinput {
+struct AddressData;
+}
+}
+
+namespace autofill {
+namespace addressinput {
+
+bool HasAllRequiredFields(
+    const ::i18n::addressinput::AddressData& address_to_check);
+
+}  // namespace addressinput
+}  // namespace autofill
+
+#endif  // THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_AS_ALL_REQUIRED_FIELDS_H_