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

components/payments/address_normalizer.h

+// 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_NORMALIZER_H_
+#define COMPONENTS_PAYMENTS_ADDRESS_NORMALIZER_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 {
+
+// A class used to normalize addresses.
+class AddressNormalizer : public autofill::LoadRulesListener,
+                          public base::SupportsWeakPtr<AddressNormalizer> {
+ public:
+  // The interface for the normalization delegates.
+  class Delegate {
+   public:
+    virtual void OnAddressNormalized(
+        const autofill::AutofillProfile& normalized_profile) = 0;
+
+    virtual void OnCouldNotNormalize(
+        const autofill::AutofillProfile& profile) = 0;
+
+   protected:
+    virtual ~Delegate() {}
+  };
+
+  // The interface for the normalization request.
+  class Request {
+   public:
+    virtual void OnRulesLoaded(bool success) = 0;
+    virtual ~Request() {}
+  };
+
+  AddressNormalizer(std::unique_ptr<i18n::addressinput::Source> source,
+                    std::unique_ptr<i18n::addressinput::Storage> storage);
+  ~AddressNormalizer() 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| possibly
+  // asynchronously.
+  void StartAddressNormalization(const autofill::AutofillProfile& profile,
+                                 const std::string& region_code,
+                                 Delegate* requester);
+
+ private:
+  // Called when the validation rules for the |region_code| have finished
+  // loading. Implementation of the LoadRulesListener interface.
+  void OnAddressValidationRulesLoaded(const std::string& region_code,
+                                      bool success) override;
+
+  // Map associating a region code to pending normalizations.
+  std::map<std::string, std::vector<std::unique_ptr<Request>>>
+      pending_normalization_;
+
+  // The address validator used to normalize addresses.
+  autofill::AddressValidator address_validator_;
+
+  DISALLOW_COPY_AND_ASSIGN(AddressNormalizer);
+};
+
+}  // namespace payments
+
+#endif  // COMPONENTS_PAYMENTS_ADDRESS_NORMALIZER_H_