[Payment Request] Picker view + showcase integration + egtests

ios/chrome/browser/payments/payment_request_picker_row.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 IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_PICKER_ROW_H_
+#define IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_PICKER_ROW_H_
+
+#import <Foundation/Foundation.h>
+
+// The model object for a row in the payment request picker.
+@interface PickerRow : NSObject
+
+// The label for the row. This is displayed in the UI.
+@property(nonatomic, copy) NSString* label;
+// The value for the row. This is not displayed in the UI and is optional.
+@property(nonatomic, copy) NSString* value;
+
+- (instancetype)initWithLabel:(NSString*)label value:(NSString*)value;

[lpromero, 2017/04/03 16:41:41]

Nit: add a new line.

[Moe, 2017/04/05 05:09:49]

Done.

+@end
+
+#endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_PICKER_ROW_H_