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diff --git a/components/autofill/content/browser/wallet/instrument.h b/components/autofill/content/browser/wallet/instrument.h
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+++ b/components/autofill/content/browser/wallet/instrument.h
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+// Copyright 2013 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_AUTOFILL_CONTENT_BROWSER_WALLET_INSTRUMENT_H_
+#define COMPONENTS_AUTOFILL_CONTENT_BROWSER_WALLET_INSTRUMENT_H_
+
+#include <string>
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/string16.h"
+
+namespace base {
+class DictionaryValue;
+}
+
+namespace autofill {
+
+class AutofillProfile;
+class CreditCard;
+
+namespace wallet {
+
+class Address;
+
+// This class contains all the data necessary to save a new instrument to a
+// user's Google Wallet using WalletClient::SaveInstrument or
+// WalletClient::SaveInstrumentAndAddress.
+class Instrument {
+ public:
+  enum FormOfPayment {
+    UNKNOWN,
+    VISA,
+    MASTER_CARD,
+    AMEX,
+    DISCOVER,
+    JCB,
+  };
+
+  // Convert the info in |card| to an Instrument using |profile| for address.
+  Instrument(const CreditCard& card,
+             const base::string16& card_verification_number,
+             const AutofillProfile& profile);
+
+  Instrument(const base::string16& primary_account_number,
+             const base::string16& card_verification_number,
+             int expiration_month,
+             int expiration_year,
+             FormOfPayment form_of_payment,
+             scoped_ptr<Address> address);
+
+  Instrument(const Instrument& instrument);
+
+  ~Instrument();
+
+  scoped_ptr<base::DictionaryValue> ToDictionary() const;
+
+  // Users of this class should call IsValid to check that the inputs provided
+  // in the constructor were valid for use with Google Wallet.
+  bool IsValid() const;
+
+  const base::string16& primary_account_number() const {
+    return primary_account_number_;
+  }
+  const base::string16& card_verification_number() const {
+    return card_verification_number_;
+  }
+  int expiration_month() const { return expiration_month_; }
+  int expiration_year() const { return expiration_year_; }
+  const Address& address() const { return *address_; }
+  FormOfPayment form_of_payment() const { return form_of_payment_; }
+  const base::string16& last_four_digits() { return last_four_digits_; }
+
+ private:
+  void Init();
+
+  // |primary_account_number_| is expected to be \d{12-19}.
+  base::string16 primary_account_number_;
+
+  // |card_verification_number_| is expected to be \d{3-4}.
+  base::string16 card_verification_number_;
+
+  // |expiration month_| should be 1-12.
+  int expiration_month_;
+
+  // |expiration_year_| should be a 4-digit year.
+  int expiration_year_;
+
+  // The payment network of the instrument, e.g. Visa.
+  FormOfPayment form_of_payment_;
+
+  // The billing address of the instrument.
+  scoped_ptr<Address> address_;
+
+  // The last four digits of |primary_account_number_|.
+  base::string16 last_four_digits_;
+
+  DISALLOW_ASSIGN(Instrument);
+};
+
+}  // namespace wallet
+}  // namespace autofill
+
+#endif  // COMPONENTS_AUTOFILL_CONTENT_BROWSER_WALLET_INSTRUMENT_H_