[Web Payments] Add data attribution string to dialog

components/payments/core/payment_prefs.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_CONTENT_PAYMENT_PREFS_H_

[Mathieu, 2017/05/11 13:47:55]

fix

[anthonyvd, 2017/05/11 17:46:28]

Done.

+#define COMPONENTS_PAYMENTS_CONTENT_PAYMENT_PREFS_H_
+
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
+namespace payments {
+
+extern const char kPaymentsFirstTransactionCompleted[];

[Mathieu, 2017/05/11 13:47:55]

Let's add a comment plz

[anthonyvd, 2017/05/11 17:46:27]

Done.

+
+void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+
+}  // namespace payments
+
+#endif  // COMPONENTS_PAYMENTS_CONTENT_PAYMENT_PREFS_H_