[Payments] Move address normalization code from android to native.

components/payments/address_validator_helper.h

Index: components/payments/address_validator_helper.h
diff --git a/components/payments/address_validator_helper.h b/components/payments/address_validator_helper.h
new file mode 100644
index 0000000000000000000000000000000000000000..8a84d48352e3fcb99bc2427ffc00562ae69e8a27
--- /dev/null
+++ b/components/payments/address_validator_helper.h
@@ -0,0 +1,68 @@
+// Copyright 2017 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 COMPONENTS_PAYMENTS_ADDRESS_VALIDATOR_HELPER_H_
+#define COMPONENTS_PAYMENTS_ADDRESS_VALIDATOR_HELPER_H_
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "components/autofill/core/browser/autofill_profile.h"
+#include "third_party/libaddressinput/chromium/chrome_address_validator.h"
+
+using autofill::AutofillProfile;
+
+namespace payments {
+
+// The interface for the normalization requesters.
+class AddressNormalizationRequester {

[please use gerrit instead, 2017/02/14 21:31:09]

nit: AddressNormalizer::Delegate

[sebsg, 2017/02/15 16:18:31]

Done.

+ public:

[please use gerrit instead, 2017/02/14 21:31:08]

Need a virtual destructor with empty body.

[sebsg, 2017/02/15 16:18:31]

Done.

+  virtual void OnAddressNormalized(
+      autofill::AutofillProfile normalized_profile) = 0;
+};
+
+// The interface for the normalization request.
+class NormalizationRequest {

[please use gerrit instead, 2017/02/14 21:31:09]

nit: AddressNormalizer::Request

[sebsg, 2017/02/15 16:18:31]

Done.

+ public:
+  virtual void OnRulesSuccessfullyLoaded() = 0;
+  virtual ~NormalizationRequest() {}
+};
+
+// A helper class to help with address validation and normalization.
+class AddressValidatorHelper

[please use gerrit instead, 2017/02/14 21:31:09]

nit: AddressNormalizer, because it does not validate anything at the moment.

[sebsg, 2017/02/15 16:18:31]

Done.

+    : public autofill::LoadRulesListener,
+      public base::SupportsWeakPtr<AddressValidatorHelper> {
+ public:
+  AddressValidatorHelper(std::unique_ptr<i18n::addressinput::Source> source,
+                         std::unique_ptr<i18n::addressinput::Storage> storage);
+  ~AddressValidatorHelper() override;
+
+  // Start loading the validation rules for the specified |region_code|.
+  void LoadRulesForRegion(const std::string& region_code);
+
+  // Returns whether the rules for the specified |region_code| have finished
+  // loading.
+  bool AreRulesLoadedForRegion(const std::string& region_code);
+
+  // Starts the normalization of the |profile| based on the |region_code|. The
+  // normalized profile will be returned to the |requester|. Returns true if the
+  // normalization will happen asynchronously.
+  bool StartAddressNormalization(autofill::AutofillProfile profile,

[please use gerrit instead, 2017/02/14 21:31:09]

const-ref for profile

You seem to have changed the PersonalDataManager API to return void instead of
boolean. Please be consistent.

[sebsg, 2017/02/15 16:18:31]

Done.

+                                 const std::string region_code,

[please use gerrit instead, 2017/02/14 21:31:09]

const-ref for region_code

[sebsg, 2017/02/15 16:18:30]

Done.

+                                 AddressNormalizationRequester* requester);
+
+ private:
+  void OnAddressValidationRulesLoaded(const std::string& region_code,

[please use gerrit instead, 2017/02/14 21:31:09]

Specify the interface being implemented.

[sebsg, 2017/02/15 16:18:31]

Done.

+                                      bool success) override;
+
+  // Map associating a region code to pending normalizations.
+  std::map<std::string, std::vector<std::unique_ptr<NormalizationRequest>>>
+      pending_normalization_;
+
+  // The address validator used to normalize addresses.
+  autofill::AddressValidator address_validator_;
+};

[please use gerrit instead, 2017/02/14 21:31:09]

DISALLOW_COPY_AND_ASSIGN

[sebsg, 2017/02/15 16:18:31]

Done.

+
+}  // namespace payments
+
+#endif  // COMPONENTS_PAYMENTS_ADDRESS_VALIDATOR_HELPER_H_